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Siemens SIWAREX WP321 Operating Instructions Manual Download Page 32

Figure 6-8

Shield connection and shield terminal

6.4

Connection of RS485 serial interface

Devices can be connected to the serial interface RS485 in accordance with the information in 

section Technical data (Page 115).

Table 6-2

Termination of RS485 serial interface

Labeling

Function

Connection pin

RS485: T+

RS485 termi: 

Is used at the physical end of the bus for inserting termi‐

nation jumpers

9

RS485: T-

RS485 termination -: 

Is used at the physical end of the bus for inserting termi‐

nation jumpers 

10

RS485: D+'

RS485 data line +':

Is used at the physical end of the bus for inserting termi‐

nation jumpers and in between for looping through the 

bus cables

11

RS485: D-'

RS485 data line -':

Is used at the physical end of the bus for inserting termi‐

nation jumpers and in between for looping through the 

bus cables 

12

RS485: D+

RS485 data cable +

13

RS485: D-

RS485 data cable -

14

If a SIWAREX WP321 module is connected to SIWATOOL or a Siebert display, insert wire 

jumpers between the T+ and D+' terminals and between the T- and D-' terminals.

Connecting
6.4 Connection of RS485 serial interface

SIWAREX WP321

32

Operating Instructions, 08/2019, A5E33715669A-AD

Summary of Contents for SIWAREX WP321

Page 1: ...69A AD Introduction 1 Safety notes 2 Description 3 Application planning 4 Mounting 5 Connecting 6 Commissioning 7 Scale parameters and functions 8 Messages 9 Command lists 10 Communication in SIMATIC S7 300 400 1200 1500 11 Technical data 12 Ordering data 13 Certificates and support A ESD guidelines B Abbreviations C ...

Page 2: ...who based on their training and experience are capable of identifying risks and avoiding potential hazards when working with these products systems Proper use of Siemens products Note the following WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation If products and components from other manufacturers are used these mus...

Page 3: ...ustomer benefits 16 4 Application planning 19 4 1 Functions 19 4 2 Parameter assignment options 19 4 2 1 Parameter assignment with the PC 19 4 2 2 Parameter assignment with the SIMATIC Panel 20 5 Mounting 21 5 1 Safety notices for installation 21 5 2 Safety information according to FM and UL 21 5 3 Installation guideline 22 5 4 EMC compliant setup 22 5 4 1 Introduction 22 5 4 2 Possible effects of...

Page 4: ...g the calibration weights 41 7 3 5 Setting calibration points 42 7 3 6 Calibrating the scale automatically 43 7 3 7 Performing the automatic calibration 44 7 3 8 Checking the scale following calibration 44 7 4 Fast commissioning Quick Start with SIWATOOL 45 7 4 1 Service with the SIWATOOL program 45 7 4 2 Establish communication to SIWAREX WP321 45 7 4 3 Calibration 46 7 4 3 1 Selecting the calibr...

Page 5: ...digits 0 1 2 calculated 71 8 7 DR 5 zeroing memory 71 8 7 1 Effective tare weight from specification 72 8 7 2 Effective tare weight semi automatic 72 8 7 3 Zero weight semi automatic 72 8 7 4 Current zero tracking weight 73 8 7 5 Dead load 73 8 8 DR 6 limit value settings 73 8 8 1 Limit reference 74 8 8 2 Limit value 1 ON limit value 2 ON limit value 1 OFF limit value 2 OFF 75 8 8 3 Limit value Em...

Page 6: ...91 8 19 DR 80 SIWAREX DB process status 92 8 20 DR 81 SIWAREX DB process status advanced 95 8 21 DR 82 SIWAREX DB device information 96 9 Messages 97 9 1 Message types 97 9 2 Message paths 97 9 3 Evaluating messages with the help of SIWATOOL 98 9 4 Evaluating messages with the help of SIMATIC FB 98 9 5 Message list 98 9 5 1 System status message list 98 9 5 2 Technology error message list 99 9 5 3...

Page 7: ... data 115 12 1 Technical data 115 12 2 Electrical EMC and climatic requirements 117 12 3 Reliability 120 12 4 Approvals 120 13 Ordering data 123 A Certificates and support 125 A 1 Technical support 125 B ESD guidelines 127 B 1 ESD Guidelines 127 C Abbreviations 129 C 1 List of abbreviations 129 Index 131 Table of contents SIWAREX WP321 Operating Instructions 08 2019 A5E33715669A AD 7 ...

Page 8: ...Table of contents SIWAREX WP321 8 Operating Instructions 08 2019 A5E33715669A AD ...

Page 9: ...ocument history The most important changes in the documentation when compared with the respective previous edition are given in the following table Manual edition Note 08 2019 Information on SIWAREX DB added 09 2018 Section Safety notes Page 13 revised Section Mounting Page 21 revised Section Scale parameters and functions Page 59 revised DR 3 Page 60 Limit frequency of low pass filter 2 and Order...

Page 10: ...or visible damages 2 Report any claims for damages immediately to the shipping company 3 Retain damaged parts for clarification 4 Check the scope of delivery by comparing your order to the shipping documents for correctness and completeness WARNING Using a damaged or incomplete device Risk of explosion in hazardous areas Do not use damaged or incomplete devices 1 5 Security information Siemens pro...

Page 11: ...e following Keep the original packaging for subsequent transportation Devices replacement parts should be returned in their original packaging If the original packaging is no longer available ensure that all shipments are properly packaged to provide sufficient protection during transport Siemens cannot assume liability for any costs associated with transportation damages NOTICE Insufficient prote...

Page 12: ...ghing technology as well as general knowledge of the SIMATIC system including the TIA Portal are necessary in order to understand the manual Introduction 1 8 Basic knowledge required SIWAREX WP321 12 Operating Instructions 08 2019 A5E33715669A AD ...

Page 13: ...tion and commissioning in the SIMATIC environment This chapter includes additional information on hardware configuration installation and preparation for operation of the SIWAREX WP321 The safety notes must be observed Note The device was developed manufactured tested and documented in compliance with the relevant safety standards The device does usually not pose any risks of material damage or pe...

Page 14: ...Safety notes 2 1 General safety instructions SIWAREX WP321 14 Operating Instructions 08 2019 A5E33715669A AD ...

Page 15: ... It can be used in almost all industrial weighing applications not requiring official calibration Use in potentially explosive atmospheres with Ex interface SIWAREX IS it s also possible 3 3 System integration in SIMATIC The electronic weighing system described here is a technology module for SIMATIC ET 200SP It can be used as desired in the configuration of the automation solution including the w...

Page 16: ...tages Uniform design technology and consistent communication in SIMATIC ET 200SP Parameter assignment by means of an operator panel STEP7 user program or PC Uniform configuration option in the SIMATIC TIA Portal SIMATIC STEP7 or PCS7 Description 3 4 Customer benefits SIWAREX WP321 16 Operating Instructions 08 2019 A5E33715669A AD ...

Page 17: ... of the scales using the SIWATOOL program Automatic calibration is possible without the need for calibration weights Module replacement is possible without recalibrating the scales Use in Ex Zone 2 ATEX approval Intrinsically safe load cell supply for Ex Zone 1 SIWAREX IS option Diagnostics functions Description 3 4 Customer benefits SIWAREX WP321 Operating Instructions 08 2019 A5E33715669A AD 17 ...

Page 18: ...Description 3 4 Customer benefits SIWAREX WP321 18 Operating Instructions 08 2019 A5E33715669A AD ...

Page 19: ...ially explosive atmospheres Zone 2 The load cells are supplied intrinsically safe in Zone 1 applications when you use the optional Ex interface SIWAREX IS 4 2 Parameter assignment options 4 2 1 Parameter assignment with the PC You can set the scale parameters with the convenience of the familiar Windows interface by using the SIWATOOL PC parameter assignment software You can use the program for co...

Page 20: ...atus can be configured You can switch between several languages in the program You require an RS485 USB converter see Ordering data Page 123 4 2 2 Parameter assignment with the SIMATIC Panel SIWAREX WP321 parameters can be assigned using a SIMATIC Panel connected to the SIMATIC CPU The Ready for use application software is used for this Application planning 4 2 Parameter assignment options SIWAREX...

Page 21: ...nstalled in a cabinet the inner temperature of the cabinet corresponds to the ambient temperature of the device Safety notices on use in hazardous areas General safety notices relating to protection against explosion WARNING EXPLOSION HAZARD Replacing components may impair suitability for Class 1 Division 2 or Zone 2 WARNING Substitution of components may impair suitability of the equipment 5 2 Sa...

Page 22: ...MATIC components together with the electronic weighing system described here the setup installation and wiring guidelines for the SIMATIC ET 200SP must be observed see system manual SIMATIC ET 200SP ET 200SP distributed I O system order no A5E03576848 This manual describes additional installation and wiring aspects specific to the electronic weighing system 5 4 EMC compliant setup 5 4 1 Introducti...

Page 23: ...sms Depending on the propagation medium conducted or non conducted and the distance between the interference source and the device interferences can enter the faulty device through four different coupling mechanisms Electrical coupling Capacitive coupling Inductive coupling Radiation coupling 5 4 4 Five basic rules for securing EMC Observe these five basic rules to secure EMC Rule 1 Large area gro...

Page 24: ...o be controlled should be connected with suppressors For cabinet lighting in the immediate range of your controller use interference suppressed fluorescent lamps Rule 5 Homogeneous reference potential Create a homogeneous reference potential and ground all electrical equipment Use sufficiently dimensioned equipotential bonding conductors if potential differences exist or are expected between your ...

Page 25: ...or up to 15 modules with the Profibus version Observe the system conditions when planning the configuration Each SIWAREX electronic weighing system requires 16 bytes of the I O area Address assignment is carried out in the TIA Portal or in the SIMATIC Manager during hardware configuration Mounting 5 6 Configuration of the hardware in SIMATIC SIWAREX WP321 Operating Instructions 08 2019 A5E33715669...

Page 26: ...Mounting 5 6 Configuration of the hardware in SIMATIC SIWAREX WP321 26 Operating Instructions 08 2019 A5E33715669A AD ...

Page 27: ...ing Function L 24 V voltage supply M Ground voltage supply 6 2 Connection of analog load cells Sensors equipped with strain gauges DMS full bridge can be connected to the electronic weighing system These sensors meet the requirements in section Technical data Page 115 Labeling Function Connection pin Sig Measurement cable load cell 2 Sig Measurement cable load cell 1 Sen Sensor cable load cell 4 S...

Page 28: ...to connect the cable see section Connecting the cable Page 31 5 Close any unused opening in the enclosure with a blanking plug 6 Connect the equipotential bonding conductor to the outside of the enclosure Use shielded cable lugs 7 Close the cover of the SIWAREX JB according to the tightening torque 6 2 2 Wiring diagrams 6 2 2 1 Load cells with four wire system DEOH JODQG DEOH JODQG 6 VKLHOG VXSSRU...

Page 29: ...ELD EXC SENSE SIGNAL SIGNAL SENSE EXC SIGNAL SENSE EXC Figure 6 3 Shield of the signal cable connected to shield terminal The following jumpers are set by default Jumper From terminal To terminal 1 EXC SENSE 2 EXC SENSE Note If the jumpers are missing the electronic weighing system reports a wire break Connecting 6 2 Connection of analog load cells SIWAREX WP321 Operating Instructions 08 2019 A5E3...

Page 30: ...cted to EMC shield terminal DEOH JODQG 6 VKLHOG VXSSRUW HOHPHQW XQFWLRQ ER 6LJQDO FDEOH OHFWURQLF HLJKLQJ 6 VWHP RDG FHOO 3 ODFN UD 5HG OXH UHHQ KLWH SHIELD SIGNAL EXC SENSE EXC SENSE SIGNAL SIGNAL SENSE EXC SIGNAL SENSE EXC Figure 6 5 Shield of load cell cable connected to shield terminal Disconnect the following jumpers Jumper From terminal To terminal 1 EXC SENSE 2 EXC SENSE Connecting 6 2 Conn...

Page 31: ...ightening torque Result The tightened screw firmly holds the stripped wire and establishes the contact 6 3 Shield connection Make sure you observe the correct design of the shield support for the shielded cables It is the only way to ensure immunity of the system A cable is shielded to attenuate the effects of magnetic electrical and electromagnetic interference on the cable Interference currents ...

Page 32: ...or inserting termi nation jumpers 10 RS485 D RS485 data line Is used at the physical end of the bus for inserting termi nation jumpers and in between for looping through the bus cables 11 RS485 D RS485 data line Is used at the physical end of the bus for inserting termi nation jumpers and in between for looping through the bus cables 12 RS485 D RS485 data cable 13 RS485 D RS485 data cable 14 If a ...

Page 33: ... the DR 13 of the SIWAREX WP is set as follows RS485 protocol Siebert display S102 Baud rate 9600 bps Character parity Even The S102 is set as follows Table 6 3 Settings of Siebert display S102 Menu item Setting Meaning 1 Interface 485 RS485 interface 9 Station address 01 Address meaning Address Weight value 01 Weight 02 Total 03 Net 04 Tare t Timeout 2 e g timeout after 2 seconds C 0 0 No decimal...

Page 34: ...e load cell and the SIWAREX WP electronic weighing system Connect the cable Page 35 DEOH JODQG 6 VKLHOG FRQQHFWLRQ HOHPHQW 6LJQDO FDEOH 6 5 3 HOHFWURQLF ZHLJKLQJ V VWHP RDG FHOO TXLSRWHQWLDO ERQGLQJ FRQGXFWRU ODFN 5HG OXH KLWH b9b 56 56 b9b SIGNAL EXC SENSE SHIELD EXC SENSE SIGNAL 0 0 6 5 Figure 6 10 Connect SIWAREX DB to SIWAREX WP electronic weighing system and load cell 5 Activate the terminati...

Page 35: ...gs 9 Close the cover of the SIWAREX DB according to the tightening torque 1 5 to 2 Nm 6 6 2 Connect the cable Condition You require a screwdriver with a maximum blade width of 2 5 mm You can use the SIWAREX cable for supply voltage and RS 485 communications Ordering data Page 123 Procedure 1 Place the cable shield in the EMC cable gland over a large area Figure 6 11 Place the cable shield in the E...

Page 36: ...g of the terminals 5 Insert the stripped cable into the round opening as far as it will go 6 Remove the screwdriver from the rectangular opening Connecting 6 6 Connection of the SIWAREX DB SIWAREX WP321 36 Operating Instructions 08 2019 A5E33715669A AD ...

Page 37: ...Commissioning tools Commission the electronic weighing system using the following alternatives Touch panel und SIWAREX WP321 function block in S7 300 400 1200 or 1500 A free example project is available for download online at TIA Portal project Ready for use for SIWAREX WP321 https support industry siemens com cs ww en view 94109373 Commissioning with SIWATOOL V7 SIWATOOL V7 is included in the WP ...

Page 38: ...n menu and then 1 2 Quick Start You will be guided through the individual tasks for setting the most important parameters The remaining parameters are factory set in such a way that they can be used in most cases without any changes You can download the HMI software used below as free TIA Portal project Ready for use for SIWAREX WP321 https support industry siemens com cs ww en view 94109373 Figur...

Page 39: ...eter settings must be reset prior to the quick setup Service mode must be switched on first Resetting to the factory setting can then be carried out Figure 7 2 Quick start step 2 Commissioning 7 3 5 minute quick start with the operator panel and the Ready for Use software SIWAREX WP321 Operating Instructions 08 2019 A5E33715669A AD 39 ...

Page 40: ...sing the technical specifications of the connected load cell s in the case of automatic calibration the accuracy of the scale is influenced by the mechanical properties to a greater extent than with calibration using reference weights With both methods make sure that the mechanical properties of the scale are flawless prior to calibration Commissioning 7 3 5 minute quick start with the operator pa...

Page 41: ... usually defines the first reference point of the scale characteristic A further reference point Calibration weight 2 can also be set in addition This is optional and may not be necessary depending on the mechanical properties of the scale Note that the interval between the calibration weights must be at least 2 of the nominal load of the scale With a 1 000 kg scale a calibration weight of at leas...

Page 42: ...ep 4 on the scale construction and execute the Set calibration weight 1 command 3 If an Calibration weight 2 was selected Place Calibration weight 2 defined in step 4 on the scale construction and execute the Set calibration weight 2 command 4 Calibration of the scale is now complete Return to the start screen by clicking on the house icon Commissioning 7 3 5 minute quick start with the operator p...

Page 43: ...characteristic values of the individual load cells are required to calculate the average characteristic value of the cells The equation for the calculation is as follows characteristic of cell 1 characteristic of cell 2 characteristic of cell n n If the exact characteristic values are unknown it is permissible to also use rounded off numbers e g 1 0 mV V 2 0 mV V The nominal load of an individual ...

Page 44: ... simple check is sufficient Perform the following steps 1 The scale is unloaded and shows 0 kg 2 Place a known reference weight on the scale Check the displayed value 3 If a second known reference weight is available place it on the scale in addition Check whether the scale displays the sum of the reference weights 4 Remove the reference weights from the scale Check that the display is 0 kg again ...

Page 45: ...onnect the RS485 interface of the SIWAREX to the USB port of the PC Close the RS485 USB converter proposed by Siemens see section Ordering data Page 123 at the base unit of SIWAREX WP321 as follows RS485 USB converter Base unit of SIWAREX WP321 Terminal A Terminal 13 D Terminal B Terminal 14 D Terminal X Bridge between terminals 9 T and 11 D Bridge between terminals 10 T and 12 D 7 4 2 Establish c...

Page 46: ...eights mechanical influences of the scale construction are also taken into account Automatic calibration without calibration weight Page 50 When calibrating without calibration weights the technical specifications of the connected load cell s are taken into account With automatic calibration the accuracy of the scale depends on the mechanical properties of the scale With both methods make sure tha...

Page 47: ...minimum calibration weight as calibration weight 1 with a load cell characteristic value of 1 mV V 4 of the total rated load of all load cells 2 mV V 2 of the total rated load of all load cells 4 mV V 1 of the total rated load of all load cells Example Number of load cells 3 Nominal load of one single load cell 100 kg Load cell characteristic value 2 mV V Use the following minimum calibration weig...

Page 48: ...by the Send data record function Therefore proceed as follows 1 Select the Receive data record function 2 Change the parameters 3 Select the Send data record function Right click on Calibration parameter DR3 and select Send data record Figure 7 12 SIWATOOL calibration parameters Send data record All parameter settings in DR3 are identical between PC and SIWAREX All calibration parameters DR3 are s...

Page 49: ...weight 1 on the scale Select Set Calibration Point 1 in the Service menu Select Service mode off in the Service menu Commissioning 7 4 Fast commissioning Quick Start with SIWATOOL SIWAREX WP321 Operating Instructions 08 2019 A5E33715669A AD 49 ...

Page 50: ...cking the scale following calibration If the scale is to be used for business purposes only check it as follows 1 The scale is unloaded and the display shows 0 kg 2 Place one or more known test weights on the scale To check other weight points of the scale in addition to the calibration weight do not use the calibration weight 3 Check the displayed weight value in the SIWATOOL program 4 Remove the...

Page 51: ...weight can be specified as calibration weight 0 This means the material weight is taken into account during automatic calibration NOTE If the specified material weight is incorrect old electronic weighing system was not calibrated correctly for example the weighing result of SIWAREX WP321 will be distorted or incorrect Figure 7 15 SIWATOOL Calibration parameters for automatic calibration without c...

Page 52: ...nd SIWAREX All calibration parameters DR3 are shown in black Defining load cell parameters Enter the marked and described load cell parameters DR10 in DS10 The No of mechanical support points corresponds with a silo for example to the number of clamps or feet of the silo A quadratic platform scale with a load cell at each corner has four support points Averaged characteristic value mV V This param...

Page 53: ...e data record sent again If not all the data can be received from the scale before the parameter change the active offline parameters in the scale can be overwritten by the Send data record function Therefore proceed as follows 1 Select the Receive data record function 2 Change the parameters 3 Select the Send data record function Run automatic calibration After sending the calibration parameters ...

Page 54: ...ly changes its calibration digits This means that SIWATOOL now has obsolete parameter values Obsolete calibration parameters are marked in red The calibration parameter DR3 must be read back in order once again obtain the calibration digits in the SIWATOOL which are consistent with the SIWAREX Commissioning 7 4 Fast commissioning Quick Start with SIWATOOL SIWAREX WP321 54 Operating Instructions 08...

Page 55: ... shows 0 kg 2 Place one or more known test weights on the scale To check other weight points of the scale in addition to the calibration weight do not use the calibration weight 3 Check the displayed weight value in the SIWATOOL program 4 Remove the test weights from the scale 5 Check that the display of the scale is 0 kg again 7 4 4 Receive all data Activate the Receive all data function in the C...

Page 56: ... the SIWAREX to the USB port of the PC The SIWATOOL program is included in the configuration package Install SIWATOOL for commissioning part of the SIWAREX WP321 configuration package see section Ordering data Page 123 on your PC 7 5 1 Windows and functions of SIWATOOL Control elements for SIWATOOL and operation of the scale Offline values of the SIWAREX module Parameter list of the SIWATOOL modul...

Page 57: ...module The current process values are displayed in the Online column For test purposes you can send various commands to the SIWAREX module Differences between the online offline data are marked in red by SIWATOOL This affects both the associated data record and the individual parameter In order to archive data all data can be exported from the SIWAREX module and saved as a file or printed Note You...

Page 58: ...SIWATOOL There is a defined procedure for handling parameters The current parameters in the SIWAREX module are displayed in the right hand window while the parameter values on the PC are displayed in the left hand window The new parameter value is entered first in the left hand window If several parameters of the data record are to be changed they are entered consecutively The data record is subse...

Page 59: ...data record then follows When it receives new parameters the SIWAREX module runs a validation check In the event of a parameter assignment error the data record is not applied not saved by the SIWAREX module and a data operator error is reported 8 2 Assigning parameters to the electronic weighing system with SIWAREX DB Introduction You can assign parameters to the SIWAREX WP electronic weighing sy...

Page 60: ... SIWATOOL to the scale Calibrate the scale Transfer the DR 3 data record from the scale to SIWATOOL Table 8 1 Assignment of data record 3 Variable Note Type Lengt h byte s Rw Default Min Max Data record number Contains no of data record UINT 2 r 3 Length Data record length information UINT 2 r 124 Application Information on which application the DR belongs to UINT 2 r 201 Version iden tifier Infor...

Page 61: ...ration with calibration weight 2 DINT 4 rw 0 0 3 999 999 Scale inter val Page 63 1 Resolution weighing range 1 1 10 k 2 10 k 5 10 k k 3 2 REAL 4 rw 0 1 0 001 50 Reserve Bit 1 Reserve BIT 2 rw 0 0 1 Reserve Bit 2 Reserve BIT 0 rw 0 0 1 Automatic zero adjust ment Page 63 Automatic zero tracking zero tracking device 0 Autom zeroing off 1 Autom zeroing on BIT 0 rw 0 0 1 Reserve 13 bits Bit 3 Reserve B...

Page 62: ...it frequen cy low pass filter 1 Page 66 Low pass filter cut off frequency 0 Filter disabled REAL 4 rw 1 0 01 200 Order no low pass filter 1 Page 66 Filter number UINT 2 rw 4 0 4 Reserve Reserve UINT 2 rw 0 Limit frequen cy low pass filter 2 Page 66 Low pass filter limit frequency 0 Filter disabled REAL 4 rw 0 0 01 200 Order no low pass filter 2 Page 66 Filter number UINT 2 rw 4 0 4 Mean value filt...

Page 63: ... calibration digits 0 1 2 The calibration weights and corresponding calibration digits define the characteristic curve of the scales A detailed description can be found in section Calibration procedure Page 67 8 4 6 Scale interval The scale interval for the weighing range can be defined in accordance with EN 45501 0 0001 to 50 8 4 7 Automatic zero adjustment If required you can carry out semi auto...

Page 64: ...on the weight which the scales would display had there been no zeroing time of scale calibration 8 4 11 Maximum positive zeroing limit You can limit the effect of the zeroing function The limitation is based not on the current weight but rather on the weight which the scales would display had there been no zeroing time of scale calibration 8 4 12 Standstill range Standstill monitoring checks wheth...

Page 65: ...ale mode with the following commands zeroing taring 8 4 14 Standstill waiting time Standstill waiting time is a maximum waiting time for standstill on execution of a command which depends on standstill taring zeroing A technology message is generated if the command cannot be executed during the standstill waiting time because there is no standstill If the standstill waiting time is equal to zero a...

Page 66: ...se to changes in the measured value A value of 5 Hz for example results in a relatively rapid response to a change in weight A value of 0 5 Hz for example makes the scale slower Note Process values filtered with low pass filter 1 are available at the SIMATIC I O DR 14 and in the DR 30 Process values filtered with low pass filter 2 can only be set to the SIMATIC I O with the corresponding selection...

Page 67: ...g to digital conversion of the measured voltage the zero point is assigned to the digital value calibration digits for the zero point If the scales are loaded with a defined standard weight e g 50 of the measuring range the new digital value returned by the analog to digital converter is assigned the standard weight The characteristic curve can also be determined with a third point which must be h...

Page 68: ...max Rated load of the load cell s e g 100 kg 1 000 000 Lmax 10 Rated weight approximately 10 e g approximately 110 kg 1 090 000 You do not need to perform calibration if the calibration digits and the calibration weights are known to the weighing module described here They are simply sent to SIWAREX by data record DR 3 and the scale is ready for use immediately The SIWATOOL program facilitates rap...

Page 69: ...generated in the positive range is extended into the negative range PD R R R GLJLWV PD GLJLWV PD GLJLWV RDG GLJLWV LJLWV GLJLWV Figure 8 4 Linearizing the scale s characteristic curve Load Comment Load Digits L 0 Load cells empty Approx 0 Lo Calibration weight 0 Zero point 0 kg e g 76 082 for calibra tion point 0 L1 Calibration weight 1 e g 60 kg e g 386 452 for calibra tion digits 1 L2 Calibratio...

Page 70: ...tive prior to execution of command 82 is directly overwritten Automatic calibration requires the following criteria Correct mechanical installation of the scale Scale is empty only mechanical installation dead load present on the cells or the material weight in on the scale is known e g after conversion to WP321 Load cells are evenly loaded There are no shunt circuits 8 6 DR 4 Output of calculated...

Page 71: ...parameters from DR 3 and DR 10 identified by bold font and is activated by the command no 82 8 7 DR 5 zeroing memory Data record DR 5 displays the current values in the tare memory and the zeroing memory Procedure Check all parameters Transfer the data record to the scale Table 8 3 Assignment of data record 5 Variable Note Type L Rw Default Min Max Data record number Contains no of data re cord UI...

Page 72: ...ve REAL 4 rw 0 8 7 1 Effective tare weight from specification A tare weight can be specified in data record DR 15 You activate the specified tare weight with a command see command 1013 From this point on the activated tare weight is factored into the weight calculations The Delete tare command deactivates the active tare weight This does not delete the specification in data record DR 15 8 7 2 Effe...

Page 73: ...Variable Note Type L Rw Default Min Max Data record num ber Contains no of data record UINT 2 r 6 Length Data record length information UINT 2 r 60 Application Information on which application the DR belongs to UINT 2 r 201 Version identifier Information on the current data record version UINT 2 r 1 1 65 635 Limit reference Page 74 Reference value for limits 0 Gross weight in of max weighing range...

Page 74: ...t value empty ON With limit reference 0 and 1 Based on the gross weight in of max weighing range With limit reference 2 and 3 in relation to absolute gross weight REAL 4 rw 0 maxi mum number range maxi mum number range Delay time for limits Page 76 Uniform delay time for limits in ms TIME 4 rw 0 0 maxi mum number range Reserve Reserve UINT 2 rw 0 Reserve Reserve UINT 2 rw 0 Reserve Reserve REAL 4 ...

Page 75: ...emented with the following specifications Switch on value switch off value Minimum value monitoring is implemented with the following specification Switch on value switch off value The diagram below illustrates the function of limit values 1 and 2 2XWSXW 2II 2II 2Q URVV RQILJXUDWLRQ DV PLQ OLPLW YDOXH 2Q RQILJXUDWLRQ DV PD OLPLW YDOXH 2XWSXW URVV Figure 8 5 Limit value configuration 8 8 3 Limit va...

Page 76: ...ent of data record 9 Variable Note Type L Rw Default Min Max Data record number Contains no of data record UINT 2 r 9 Length Data record length infor mation UINT 2 r 68 Application Information about which application the DR be longs to UINT 2 r 201 Version identi fier Information on the current data record version UINT 2 r 1 1 65635 Order number header Maximum and current string length for the ord...

Page 77: ...just the scales Table 8 6 Assignment of data record 10 Variable Note Type L Rw Default Min Max Data record number Contains no of data record UINT 2 r 10 Length Data record length information UINT 2 r 44 Application Information about which application the DR belongs to UINT 2 r 201 Version identifi er Information on the current data re cord version UINT 2 r 1 1 65635 Reserve UINT 2 rw 1 1 6 Selecti...

Page 78: ...ration points with theoretical calibration 8 10 1 Selection of the sampling rate For better suppression of interferences set the measuring rate and the line frequency as follows Measuring rate Line frequency 100 Hz 50 Hz parameter code 0 120 Hz 60 Hz parameter code 1 Interferences can be caused by the power supply grid For fast measurements you can select a measuring rate of 600 Hz parameter code ...

Page 79: ...nts If no anchor points are used the number of support points is equal to the number of load cells If anchor points are used in addition to load cells the number of support points is equal to the total number of load cells and fixed support points Scale parameters and functions 8 10 DR 10 load cell parameters SIWAREX WP321 Operating Instructions 08 2019 A5E33715669A AD 79 ...

Page 80: ...is not used the default values can be retained Procedure Check the parameters and modify them as required Transfer the data record to the scale Table 8 7 Assignment of data record 13 Variable Note Type L Rw Default Min Max Data record number Contains no of data record UINT 2 r 13 Length Data record length information UINT 2 r 24 Application Information about which applica tion the data record belo...

Page 81: ...r parity This parameter defines the character parity for the RS485 interface 8 11 4 Decimal place for Siebert indicator A fixed decimal place must be specified if a Siebert indicator is used The following values are permitted 0 4 8 12 DR 14 SIMATIC interface parameters The parameters which define the response of the SIMATIC interface are specified in data record DR 14 It is possible to define the ...

Page 82: ...e DR 30 and DR 31 data records and the FB SIWA function block The transfer of a larger data record is based on acyclic services It may take several SIMATIC CPU cycles and therefore have a negative effect on system performance The I O interface of the SIWAREX module is the best option if a process value is to be rapidly transferred to the SIMATIC CPU as soon as it is created in the SIWAREX module D...

Page 83: ...eight Procedure Enter the tare weight Transfer the data record to the scale Enable the tare weight using command 1013 Table 8 10 Assignment of data record 15 Variable Note Type L Rw Default Min Max Data record number Contains no of data record UINT 2 r 15 Length Data record length infor mation UINT 2 r 16 Application Information about which application the DR be longs to UINT 2 r 201 Version iden ...

Page 84: ...ccessible without data record communication Table 8 11 Assignment of data record 30 Variable Note Type L Rw Default Min Max Data record number Contains no of data record UINT 2 r 30 Length Data record length information UINT 2 r 44 Application Information on which applica tion the data record belongs to UINT 2 r 201 Version identi fier Information on the current da ta record version UINT 2 r 1 1 2...

Page 85: ...nection to the SI MATIC exists on the part of the application BIT 0 r 0 Startup Startup has taken place is de leted again after 5 seconds BIT 0 r 0 Fault status Operating fault BIT 0 r 0 Gross process weight Page 86 Gross weight process value REAL 4 r 0 Net process weight Page 86 Net weight process value REAL 4 r 0 Tare process weight Page 86 Tare weight process value REAL 4 r 0 Gross net weight P...

Page 86: ... are rounded as specified in data record DR 3 with the Decimal places for process values Page 64 parameter 8 14 4 Gross net weight The current weight for the main display The resolution corresponds to the scale interval Page 63 specified in data record DR 3 8 14 5 Gross net weight with increased resolution x 10 The current weight for the main display in higher resolution The resolution corresponds...

Page 87: ...ult Min Max Data record number Contains no of data record UINT 2 r 31 Length Data record length information UINT 2 r 24 Application Information about which applica tion the data record belongs to UINT 2 r 201 Version iden tifier Information on the current data re cord version UINT 2 r 1 1 65635 Unfiltered dig it value Page 87 Unfiltered digit value of AD con verters digital load cells DINT 4 r 0 F...

Page 88: ...atus bit is reset in DR30 Table 8 13 Assignment of data record 32 Variable Note Type L Rw De fault Min Max Data record number Contains no of data record UINT 2 r 32 Length Data record length information UINT 2 r 26 Application Information about which application the data record belongs to UINT 2 r 101 Version identi fier Information on the current data record version UINT 2 r 1 1 65635 1000 Operat...

Page 89: ...le is faulty or ODIS is active BIT r 0 0 1 Reserve BIT r 0 0 1 Reserve BIT r 0 0 1 5101 Command is not permissible in this oper ating state BIT r 0 0 1 5102 Command not possible because not at standstill BIT r 0 0 1 5104 Command not possible because range is exceeded BIT r 0 0 1 5105 Load cell parameter not plausible BIT r 0 0 1 Reserve BIT r 0 0 1 5107 Shifting characteristic not possible BIT r 0...

Page 90: ... bytes with technology errors error numbers 2xxx and six bytes with data and operator errors error numbers 5xxx and 7xxx 8 17 DR 34 ASCII main display value The ASCII weight corresponds to the value on the main display of the scales and can be used for a supplementary display as well as the main display Table 8 14 Assignment of data record 34 Variable Note Type L Rw Default Min Max Data record num...

Page 91: ... B I r r o r Tare display activated pt p T 5 0 5 0 kg Tare display activated T 5 0 5 0 kg 8 18 DR 70 SIWAREX DB parameter The parameters which define the response in combination with SIWAREX DB are specified in data record DR 70 If SIWAREX DB is not used the default settings can be accepted Table 8 15 Assignment of data record DR 70 Variable Note Data type Length bytes Rw Default Min Max Data reco...

Page 92: ...15 0 15 Sensor type SENSOR_TYPE 0 4 wire sensor 1 6 wire sensor USHORT 2 r w 0 0 1 Total capacity of all load cells NOMINAL_LOAD Total capacity of all load cells FLOAT 4 r w 1000 tbd tbd 8 19 DR 80 SIWAREX DB process status In data record DR 81 monitor the current statuses and process values in the scales with the help of the SIWAREX DB To optimize the parameters monitor selected data when commiss...

Page 93: ...rload Bit 2 Overload Bit 3 SEN error Bit 4 Impedance error Bit 5 EXC short circuit Bit 6 Power supply failure USHORT 2 r 0 Load cell input 1 filtered dig it value LOAD_CELL_IN PUT_1_DIGITS_FILTERED Filtered digit value of AD converter from SIWAR EX DB to dig filter 1 LONG 4 r 0x7FFF FFFF 0x8000 0000 0x7FFF FFFE Load cell input 1 Load LOAD_CELL_IN PUT_1_PERCENT AGE_LOAD Current percentual load of t...

Page 94: ...G 4 r 0x7FFF FFFF 0x8000 0000 0x7FFF FFFE Load cell input 3 Load Current percentual load of the load cell in relation to the rated load of the load cell FLOAT 4 r 0 200 200 Load cell input 3 Signal volt age SIG mV Currently measured load cell signal Float 4 r 0 200 200 Load cell input 4 Status Bit 0 QI flag Bit 1 Underload Bit 2 Overload Bit 3 SEN error Bit 4 Impedance error Bit 5 EXC short circui...

Page 95: ...T AGE Excitation voltage EXC V with which the load cells are supplied FLOAT 4 r 0 0 10000 Load cell input 1 Impe dance Ohm LOAD_CELL_IN PUT_1_IMPEDANCE Current impedance Ohm of connected load cell FLOAT 4 r 0 0 20000 Load cell input 2 Impe dance Ohm FLOAT 4 r 0 0 20000 Load cell input 3 Impe dance Ohm FLOAT 4 r 0 0 20000 Load cell input 4 Impe dance Ohm FLOAT 4 r 0 0 20000 Load cell input 1 Sense ...

Page 96: ...ant The entries in the data record are of no importance to the user for operation Table 8 18 Assignment of data record DR 82 Variable Note Type Length bytes Rw Default Min Max Data record number DR_NO Contains no of data re cord USHORT 2 R 82 Length DR_LEN Data record length infor mation USHORT 2 R 184 Application APPL_ID Information on which application the data re cord belongs to USHORT 2 R 101 ...

Page 97: ...logy errors occur spontaneously due to the process flow of a weighing Status bits on the other hand are not messages The status displays describe the status of the scale during normal operation and can be monitored or evaluated at any time 9 2 Message paths You can read out the messages using different paths You define the path for forwarding and processing of messages during configuration The mes...

Page 98: ...bit becomes 1 9 5 Message list The message list is an overview of all messages that the SIWAREX module can generate A message can be quickly identified by the message code number 9 5 1 System status message list Operator error code 1000 to 1999 Error code Description and remedy 1000 operating error exists 1000 Group message at least one operating error exists 1001 Watchdog 1001 Watchdog error is d...

Page 99: ...t appli cation 5003 Cannot exit service mode 5003 Cannot exit service mode calibration incomplete 5004 Command or data transfer only per mitted in service mode 5004 Activation of service mode is required to execute command or transmit data 5005 Command or data transmission not possible because service mode is active 5005 Command can currently not be executed because service mode is active 5006 Com...

Page 100: ...009 Standstill range or standstill wait time are not plausible 7010 Scale interval rounding 7010 Resolution or selection for rounding to decimal places is not plausible 7011 Filter parameters 7011 Specification of filter parameters is not plausible 9 5 4 Messages by LEDs on the module The LEDs on the front of the SIWAREX module signal the following status and error messages Item Color Labeling Fun...

Page 101: ... shift Move calibration characteristic The command de fines the current weight of the scale as the new zero point 0 kg and shifts the complete characteristic without changing the gradient The command can be used for example in order to compensate parts used for mounting calibration weights on the scale at the end of the calibration x 82 Perform automatic calibration Calculating the scale character...

Page 102: ...be triggered in the scale data block SCALE_DB in the area CMD1 to CMD3 Table 10 1 Command groups of the SIWAREX WP321 Command group Description 1 99 Commands are forwarded from the FB_SIWA via data record DR 2 to the module scale commands weighing commands log commands The meaning of the com mands corresponds to the command list 2000 X Reading of a data record X corresponds to the data record numb...

Page 103: ...ic and another for TIA Portal The two programs each consist of two parts STEP 7 software for the SIMATIC CPU WinCC project integrated in SIMATIC Manager All messages are saved as bit information The message system can thus directly access the bit fields and display the message texts See also SIWAREX WP321 Ready for use https support industry siemens com cs ww en ps 17799 dl 11 3 Advantages of task...

Page 104: ...basic properties of the electronic weighing system are defined during hardware configuration in the TIA Portal Ensure that the electronic weighing system is always completely in the process image of the CPU Installation location of the electronic weighing system Address in I O area Diagnostics interrupts Hardware interrupts I M Identification Maintenance data The electronic weighing system occupie...

Page 105: ...ptionally enabled or deactivated in the properties of the electronic weighing system The configuration scope for diagnostics and hardware interrupts depends on the SIMATIC CPU used S7 300 S7 400 S7 1200 or S7 1500 Diagnostics interrupts Page 111 and Hardware interrupts Page 112 Figure 11 3 Configuration of interrupts in TIA Portal Figure 11 4 HW ID of the electronic weighing system in TIA Portal u...

Page 106: ...of the electronic weighing system Page 104 Instance data block number of SIWAREX WP321 function block DB321 The function block can be integrated at the desired position in the user program using drag and drop Calling of the FB must be carried out cyclically in the control program Figure 11 5 Calling WP321 DR block V1 x and V2 x in the user program Communication in SIMATIC S7 300 400 1200 1500 11 5...

Page 107: ...meters The input and output parameters of the FB must be matched to the respective WP321 for each call 11 6 Working with the function block Data records in SIWAREX weighing modules All parameters in SIWAREX weighing modules are structured in data records These data records must be considered as connected packages and can only be respectively read into the CPU or written to the SIWAREX as complete ...

Page 108: ...owest priority If all three command mailboxes are triggered simultaneously by the user program for example the function block initially processes CMD1 then CMD2 and finally CMD3 Cyclic triggering of command mailbox 3 is also interrupted by intermediate sending of a command in mailbox 2 or 1 for processing of the respective command Note Cyclic triggering of the CMD1 command mailbox makes it impossi...

Page 109: ...E 1 bo_CMD_TRIGGER TRUE Since only complete data records can be read or written it is recommendable to now read data record 3 into the CPU This is carried out using command code 2003 see chapter Command lists Page 101 i_CMD_CODE 2003 bo_CMD_TRIGGER TRUE All current data from data record 3 are now present in the data block The calibration weight is then set as desired to a value of 60 5 CALIBRATION...

Page 110: ... errors when working with the function block Error bit Error description bo_ApplIDError Address module does not match the function block bo_ApplIDDRError Data record does not match the inserted module bo_SFBError Runtime error during transmission of data record bo_RdPerError Reading of I O data failed bo_LifeBitError SIWAREX no longer responds bo_StartUpError Command was sent although StartUp is s...

Page 111: ...exceeded Eliminate scale overload Underload 08H Lower limit for sensor voltage fallen below Check mechanics of the scale check the wiring of the sensor Checksum error in parameter 0DH The checksum for the integrity of the parame ters is incorrect Download factory setting of the pa rameters Checksum error program 0EH The checksum for the integrity of the parame ters is incorrect Download firmware a...

Page 112: ...en an event that triggers a hardware interrupt occurs and a previous event of the same kind has not yet been processed no further hardware interrupt is triggered The hardware interrupt is lost This may lead to the Hardware interrupt lost diagnostics interrupt depending on the parameterization No hardware interrupts are activated by default One result of triggering a hardware interrupt is that the ...

Page 113: ...Figure 11 8 Configuration of hardware interrupts for S7 1500 Communication in SIMATIC S7 300 400 1200 1500 11 11 Hardware interrupts SIWAREX WP321 Operating Instructions 08 2019 A5E33715669A AD 113 ...

Page 114: ...Communication in SIMATIC S7 300 400 1200 1500 11 11 Hardware interrupts SIWAREX WP321 114 Operating Instructions 08 2019 A5E33715669A AD ...

Page 115: ...ckplane bus Typically 20 mA Analog load cell interface connection Error limit to DIN1319 1 at 20 C 10 K 0 05 v E 1 Accuracy according to OIML R76 no approval for measurements requiring verification Class III and IV Resolution d e 3000d Error percentage pi 0 4 Step voltage 0 5 µV e Accuracy delivery state2 typ 0 1 v E Sampling rate 100 120 600 Hz depending on parameterization Input signal resolutio...

Page 116: ...ge drops on cables are compensated up to 5 V Cable length Maximum cable length 500 m with SIWAREX cable Ordering data Page 123 RS485 interface Standard EIA 485 Baud rate Up to 115 Kbps Parity even odd none Terminating resistors can be activated 390 Ω 220 Ω 390 Ω Electrical isolation 500 V AC Transfer protocol Display from the Siebert company type S102 See section Connection of Siebert display via ...

Page 117: ...t In shipping package 1 0 m drop height 12 2 Electrical EMC and climatic requirements Electrical protection and safety requirements Fulfilled requirement Standards Comments Safety regulations IEC 61010 1 IEC 61131 2 UL 508 CSA C22 2 No 142 IEC 61010 2 201 FM3611 Protection class IEC 61140 Module is operated with protective extra low voltage The protective conductor connection serves only a functio...

Page 118: ...ronment 0 15 0 5 MHz 79 dB μV Q 0 15 0 5 MHz 66 dB μV M 0 5 30 MHz 73 dB μV Q 0 5 30 MHz 60 dB μV M Table 12 2 Interference immunity industrial environment EN 61000 6 2 Comments Standard Severity class Burst pulses on power supply ca bles EN45501 OIML R 76 EN 61000 4 4 NAMUR NE21 1 kV 1 min per priority Burst pulses on data and signal ca bles EN 61000 4 4 NAMUR NE21 EN 61326 2 0 kV opt 2 4 kV 5 50...

Page 119: ... is a device of class A The device may cause radio interference in residential areas Implement appropriate measures e g use in 8MC cabinets to prevent radio interference Ambient conditions The use of SIWAREX WP321 is intended under the following conditions in SIMATIC ET 200SP Table 12 3 Operating conditions to IEC 60721 Mode IEC60721 3 3 Class 3M3 stationary use weather proofed Storage transport I...

Page 120: ...nic Weighing System MTBF in years SIWAREX WP321 1495 years TA 40 C 12 4 Approvals NOTICE Safety guidelines for applications in hazardous areas For applications in hazardous areas read the safety instructions in the document Product Information Use of SIWAREX Modules in a Zone 2 Hazardous Area https support industry siemens com cs ww en Note The current approvals for your device can be found on the...

Page 121: ...tificate https support industry siemens com cs ww de view 109476230 en EAC certificate https support industry siemens com cs ww de view 109476219 en Tick mark for Australia and New Zealand KCC approval The modules are RoHS compliant according to EU Directive 2016 65 EU Technical data 12 4 Approvals SIWAREX WP321 Operating Instructions 08 2019 A5E33715669A AD 121 ...

Page 122: ...Technical data 12 4 Approvals SIWAREX WP321 122 Operating Instructions 08 2019 A5E33715669A AD ...

Page 123: ... the SIWAREX WP321 through the RS485 interface Suitable remote display S102 Siebert Industrieelektronik GmbH Postfach 1180 D 66565 Eppelborn Germany Tel 06806 980 0 Fax 49 0 6806 980 999 Internet Siebert http www siebert group com You can obtain more detailed information from the manufacturer RS485 USB converter Commercially available converter with FTDI chip e g USB Nano 485 from CTI http www cti...

Page 124: ...Ordering data SIWAREX WP321 124 Operating Instructions 08 2019 A5E33715669A AD ...

Page 125: ...vice support Personal contact If you have additional questions about the device please contact your Siemens personal contact at Partner http www automation siemens com partner To find the personal contact for your product go to All Products and Branches and select Products Services Industrial Automation Process Instrumentation Documentation You can find documentation on various products and system...

Page 126: ...Certificates and support A 1 Technical support SIWAREX WP321 126 Operating Instructions 08 2019 A5E33715669A AD ...

Page 127: ...f human perception These static voltages develop when you touch a component or electrical connection of a device without having drained the static charges present on your body The electrostatic discharge current may lead to latent failure of a module that is this damage may not be significant immediately but in operation may cause malfunction Electrostatic charging Anyone who is not connected to t...

Page 128: ...grounded This prevents electrostatic charge Avoid direct contact As a general rule only touch electrostatic sensitive devices when this is unavoidable e g during maintenance work Handle the modules without touching any chip pins or PCB traces In this way the discharged energy can not affect the sensitive devices Discharge your body before you start taking any measurements on a module Do so by touc...

Page 129: ...trument NAW Non automatic scales OIML Organisation Internationale de Metrologie Legale OP Operator Panel SIMATIC PC Personal computer pT Preset tare predefined tare weight with manual taring RAM Random access memory PLC Programmable logic controller STEP 7 Programming device software for SIMATIC S7 T Tare weight TM Technology module TP Touch Panel SIMATIC UDT Universal Data Type S7 WRP Write prote...

Page 130: ...Abbreviations C 1 List of abbreviations SIWAREX WP321 130 Operating Instructions 08 2019 A5E33715669A AD ...

Page 131: ...t request I Instructions and manuals 125 M Manuals 125 MTBF 120 O Operating Instructions 125 R Reliability 120 S Safety notices for installation 21 Use in hazardous areas 21 Scope of delivery 10 Service 125 Service Support 125 Internet 125 Support 125 Support request 125 T Technical support 125 Partner 125 Personal contact 125 W Warranty 11 SIWAREX WP321 Operating Instructions 08 2019 A5E33715669A...

Page 132: ...Index SIWAREX WP321 132 Operating Instructions 08 2019 A5E33715669A AD ...

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