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ADOS S.R.L. Buccinasco (MI)

492-MTU10006

Rev. 4

Page 19 of 49

3.11.6

 

Bi-directional modality with MODBUS protocol

The RTU version of MODBUS is used.

Received and transmitted frame structure

General frame structure is as follows:

ADDRESS

FUNCTION

DATA

CHECK

8 bits

8 bits

N x 8 bits

2 x 8 bits

ADDRESS

8 bit defining the slave address and ranging from 1 to 32

FUNCTION 8 bit defining the required function.

The functions supported by A100E are the following
Code 03

Read Holding Registers

Code 05

Force Single Coil

Code 06

Preset Single Register

Code 16

Preset Multiple Registers

DATA

All data relevant to the specific function

CHECK

CRC-16 (Cyclic Redundancy Check) frame validation

Exception responses

When A100E receives a request involving illegal functions or illegal data an exception response is generated
containing address, function code, error code and checksum.
To indicate that the response is a notification of an error, the high order bit of the function code is set to “1”.

Supported error code are:

01

Illegal function. The message function received is not an allowable action for the
addressed slave.

02

Illegal data address. The address referenced in the data field is not an allowable
address in the address slave location

03

Illegal data value. The value referenced in the data field is not allowable in the
addressed slave location

A100E supported functions

For a complete description of MODBUS available functions, please refer to detailed MODBUS
documentation.

Function 03 - Read Holding Registers

Содержание A100E

Страница 1: ... 11 00 Golinelli G Paulitti G 3 Changes to Rev 1 5 10 04 99 Golinelli G Paulitti G 2 Changes to Rev 1 2 password 15 06 98 Golinelli G Paulitti G 1 MODBUS protocol 02 03 98 Golinelli G Paulitti G 0 Issue 27 11 97 Golinelli G Paulitti G 492_4 Rev Subject of the revision Date Prepared Checked Approved ...

Страница 2: ...elay operation 13 3 11 SERIAL INTERFACE MANAGEMENT 15 3 11 1 Primary serial interface 15 3 11 2 RS485 interface 15 3 11 3 Continuous modality 16 3 11 4 Bi directional modality 16 3 11 5 Print On Request modality 18 3 11 6 Bi directional modality with MODBUS protocol 19 3 11 7 Auxiliary serial interface 24 4 INSTALLATION 25 4 1 Material receiving 25 4 2 Instrument mounting 26 4 3 Connections 27 4 3...

Страница 3: ...38 6 3 7 Zero limit 40 6 3 8 Motion band 40 6 3 9 Zero tracking limit 40 6 3 10 Primary serial port 41 6 3 11 Auxiliary serial port 41 6 3 12 Transmission delay 41 6 3 13 Receiver Time out 41 6 3 14 Address on RS485 41 6 3 15 Baud rate 41 6 3 16 Relay function 43 6 3 17 Relay threshold 43 6 3 18 Dead Band 43 6 4 Calibration 44 6 4 1 Zero calibration 45 6 4 2 Span calibration 46 6 5 Test 47 6 6 Sys...

Страница 4: ... A series of display messages guides the operator through all the phases A series of options sets up the instrument for the main functions related to electronic weighing 1 2 Versions options A 1 0 0 E X X Type of power supply 1 115 Vac 2 230 Vac 3 24 Vac 4 24 Vcc 5 12 Vcc Version set up for management Transpallet T SAMPLE ORDER A100E wired for 230 Vac operation A 1 0 0 E 2 1 3 Documentation This t...

Страница 5: ...pment marking description A100E is marked with symbols compliant with European Standard 61010 1 April 1993 SYMBOL DESCRIPION Alternating current Protective conductor terminal Earth ground terminal Caution refer to accompanying documents Caution risk of electric shock ...

Страница 6: ...ec Graduation 1000 2000 3000 4000 5000 Resolution 1 2 5 10 20 50 Off scale limit UL OL 20 of full scale load Display five 5 digits LED Polarity sign Keyboard six 6 keys Status indicators four 4 LED indicators Decimal point user defined 0 0 0 0 00 0 000 0 0000 Zero tracking user defined 0 5 1 2 5 10 div s AZM aperture user defined OFF 1 9 100 of F S Motion band user defined OFF 0 5 1 2 5 10 20 div ...

Страница 7: ... 49 3 INSTRUMENT OPERATIONS 3 1 Turning on the instrument When the instrument is turned on the primary display indicates the following at intervals of about two seconds A D O S A 1 0 0 E V E R 1 0 6 Revision of the installed software Figure 1 SW1 JP2 JP1 ...

Страница 8: ...th the instrument setted in the Net mode and the weight stable the instrument will copy the current value of the gross weight into the tare value thus clearing the net weight value The Tare command can also be issued from serial line 3 4 Manual Zero Value of gross weight can be manually zeroed out by pressing the 0 key if the instrument is setted in GROSS the weight is stable and the total zeroed ...

Страница 9: ...o the tare value thus clearing the value of the net weight S1 The LED is on when relay 1 is energized S2 The LED is on when relay 2 is energized 3 7 Key functions ZERO Press this key with the instrument in the Gross mode and the weight stable to clear the divisions indicated on the display within the limits set by the configuration of the AZM limit parameter G N Press this key to toggle between th...

Страница 10: ... S R L Buccinasco MI 492 MTU10006 Rev 4 Page 10 of 49 Press this key to perform a print request on the primary serial port The request takes effect only if the serial port is configured for print on request ...

Страница 11: ...ing safety Generally speaking when a fault condition is detected the instrument is driven to a safety condition deenergizing alarm relays Display indications are provided to help in fault finding 3 9 1 Configuration memory integrity check Check is carried out at power on If the configuration memory is found defective the power on sequence will not be completed all relays are driven to alarm condit...

Страница 12: ...rial line Redo tare ER 03 Error in DIVIS e SENSIB parameters Relays are deenergized Error code is reported on serial line Reconfigure parameters ER 04 Error in AVER and DEC PNT No effect Error code is reported on serial line Reconfigure parameters ER 05 Error in LIM AZM MOTION ZERO TRACKING parameters Relays are deenergized Error code is reported on serial line Reconfigure parameters ER 06 Error i...

Страница 13: ...t contact opened for all the negative net weight values lower than in terms of absolute value the threshold set in the configuration The relay is energized and the output contact closed for all the negative net weight values greater than or equal to in terms of absolute value the threshold set in the configuration Example if the threshold set is 1250 the relay is de energized for positive values a...

Страница 14: ...92 MTU10006 Rev 4 Page 14 of 49 Example if the threshold set is 1250 the relay is energized for positive new values and for all the negative values from 1 to 1249 The relay is de energized for values ranging between 1250 and F S ...

Страница 15: ...ed in the socket U4 see Figure 1 The primary serial line can be configured in one of the following operating modes Off Continuous transmission Bi directional eventually with address for 485 Print On request from keyboard command or external button The transmission parameters of the primary and auxiliary line are 8 bit No Parity 1 Stop The primary line speed can be configured as follows 9600 4800 2...

Страница 16: ...tart Of Test Hex 02 character POL Blank Hex 20 or Hex 2D character to indicate the polarity of the data WEIGHT string of 7 numerical characters Hex 30 39 representing the weight shown on display and possibly with Hex 2E K K Hex 4B G N G Hex 47 or N Hex 4E character to indicate the Gross Net state STATUS one of the following characters Blank Hex 20 System under normal operating conditions I Hex 43 ...

Страница 17: ... STX l hex 5C gross weight request command A string is transmitted with the same format of what is described for continuos mode but always sending the value of the gross weight independently from display selection If 485 address is other than zero the ADDR field is inserted after STX Z ZERO command The command is always accepted even if the instrument is in Net mode or the Motion is ON The command...

Страница 18: ...point 7 char including decimal point if any SEnt ddddddd set value of the set point n to type t and to value dddd 3 11 5 Print On Request modality The weight string is transmitted like in the continuous transmission when operator pressing the E key when the instrument is not being configured ...

Страница 19: ...ancy Check frame validation Exception responses When A100E receives a request involving illegal functions or illegal data an exception response is generated containing address function code error code and checksum To indicate that the response is a notification of an error the high order bit of the function code is set to 1 Supported error code are 01 Illegal function The message function received...

Страница 20: ...r 2 is 448 Function 05 Force Single Coil Allows the host to force a single coil In A100E the command is used to issue a ZERO G N TARE or POF reset command If the ZERO cannot be done not enabled or weigh higher than the allowable limit an Illegal Data Value exception response will be generated The below is a valid example ADDR FUNC COIL HI COIL LOW DATA VALUE HI DATA VALUE LOW CHECK 01 05 00 00 FF ...

Страница 21: ...ing register The below example preset register 12 13 and 14 of slave 01 with 5 0 342 ADDR FUNC STRT REG HI STRT REG LOW OF REG HI OF REG LOW BYTE CNT DATA VAL HI DATA VAL LOW DATA VAL HI DATA VAL LOW DATA VAL HI DATA VAL LOW CHECK 01 16 00 16 00 03 06 00 05 00 00 01 56 4A A4 Teh normal response to a function 16 query is to echo the adrress function code starting address and number of registers to ...

Страница 22: ... those marked as R W are read write Register Number Function Type 0 Status word R 1 2 Gross weigh value R 3 4 Tare weigh value R 5 Division R W 6 Resolution R W 7 Decimal point position R W 8 Averages R W 9 AZM limit R W 10 MOTION band R W 11 ZERO tracking limit R W 12 Primary serial port operating mode R W 13 Auxiliary serial port operating mode R W 14 Transmission delay R W 15 Receiver time out ...

Страница 23: ...2 11 10 9 8 7 6 5 4 3 2 1 0 POF 0 S Diagnostic error code G N 0 0 0 0 0 R2 R1 POF Power On Flag Indicates a return of power supply to the transmitter Flag is set to 1 by A100E and can be resetetd to 0 by host by forcing Coil 1 S if 1 indicates configuration in progress Diagnostic err code error code see self diagnostic paragraph G N if 1 indicates that the instrument is in NET mode R2 R1 if 1 indi...

Страница 24: ...with the following format STX POL WEIGHT K L N STATUS CR LF where STX Start Of Test Hex 02 character POL Blank Hex 20 or Hex 2D character to indicate the polarity of the data WEIGHT string of 7 numerical characters Hex 30 39 and possibly with Hex 2E K K Hex 4B G N G Hex 47 or N Hex 4E character to indicate the Gross Net state STATUS one of the following characters Blank Hex 20 System under normal ...

Страница 25: ...iately and in writing to the supplier and to the carrier which delivered the goods The instrument should be delivered with the following 1 kit of removable female terminal blocks for power supply and I O wiring 2 attachment brackets 1 copy of the instruction manual 2 copies of the instrument testing certificate check that the serial no reported in the special area on the back corresponds to what i...

Страница 26: ...gure 2 Insert the instrument hook the two attachment brackets into the special holes located on the side of the box Then use a screwdriver to adjust the set screws until the front frame is flush with the board For the necessary depth consider the length of the instrument plus about 5 cm for the connection cables Figure 2 A100E drilling template 144 129 72 144 129 68 138 ...

Страница 27: ...output and serial line wiring shielded cable is recommended Load cell analog output and serial line wiring must be separated from power lines The A100 mounting panel or cabinet must be properly grounded A100E output relays must be used only to drive relay coils with nominal current and voltage beyond contact rating and using dumping networks or logic input or signaling lamps they cannot be used to...

Страница 28: ...by means of flexible wire having a minimum section of 2 5mmq 4 3 2 Power supply connection Connect the power supply to terminals 2 and 3 of terminal block M1 Terminal 3 must be connected to the earth TERMINAL BOARD PIN FUNCTION M1 1 Earth M1 2 230 Vac line 0 Vdc with dc version M1 3 230 Vac line Vdc with dc version UNLESS OTHERWISE INDICATED THE INSTRUMENT IS SUPPLIED FOR USE WITH 230 Vac POWER SU...

Страница 29: ...load cell when using ADOS cells refer to table 167 MTSCACOC The A100E includes the standard connection of load cells with 4 wires For a connection to load cells equipped with senses therefore with a 6 wire connection contact ADOS THE CONNECTION CABLE BETWEEN THE LOAD CELLS AND THE INSTRUMENT MUST FOLLOW A COMPLETELY SEPARATE LAYOUT TO AVOID UNWANTED COUPLING THAT CAN REDUCE THE QUALITY OF MEASUREM...

Страница 30: ...agraph for the functional aspects Refer to CONFIGURATION section of the manual for the programming modalities As output a normally open NO contact that is voltage free is available to the user for each relay The contact rating is 0 5A at 24 Vdc If contact drives relay coils or inductive loads a shut off circuit must be provided in parallel to the contact TERMINAL BOARD PIN FUNCTIONS M2 1 Relay 1 N...

Страница 31: ...line can be used in the R232 mode refer to section CONFIGURATION for the operating modalities Connections must be done with a shielded cable RS232 lines or with a twisted pair RS 485 lines In the RS485 modality put a 50 resistor in parallel where necessary to the signal of the unit that is farthest from the HOST to correct for possible signal reflections TERMINAL PIN FUNCTION M3 1 RX232 RTX485 B M...

Страница 32: ...nance For safety reason is a good practice to check periodically by visual inspection the connections to the protective earthling system 5 2 Corrective maintenance Any corrective maintenance to possible failures must be carried out at ADOS laboratories or at least by ADOS authorized personnel EVERY UNAUTHORIZED ACCESS TO THE INSTRUMENT VOIDS WARRANTY ...

Страница 33: ...meters are maintained in non volatile storage The parameter storage state is controlled when the instrument is turned on if the result is negative the instrument is automatically re initialized with the base configuration and must be reconfigured and re calibrated During the instrument configuration process the state of the signal LED s remains congruent with that of the process however the LED s ...

Страница 34: ... display is used to display set the value of the parameter to be modified To enter the instrument control modality just press the F key The instrument prepares to configure the parameters and displays the following message C O N F I G pressing the F key switches the control level and the following messages appear C O N F I G C A L I B R T E S T I N I T pressing the E key confirms the selection mad...

Страница 35: ...t unwanted access to system functions The instrument shows the password request message on display P A S S W and the message characters are substituted with when the operator keys in the password When a correct access code is fully keyed the selected function menu will appear otherwise the instrument will go back to the function selection menu 6 2 2 Keyboard time out After 30 seconds of no keyboar...

Страница 36: ...t one Pressing the numeric keys directly sets the number of the parameter to be configured Press the N G key to decrease the number of the parameter selected after reaching the last one it returns automatically to the first one Press the C key to cancel the configuration request and return to the configuration level selection menu Press the E key to confirm the selection made and the instrument pr...

Страница 37: ...to a maximum of 128 times the base value Press the N G key to decrease the value of the parameter selected after reaching the minimum it returns automatically to the maximum If the data displayed is a weight for example a relay threshold the decrease will occur on the basis of the configured resolution By keeping the N G key pressed the decrease gradient is increased automatically up to a maximum ...

Страница 38: ...t the following values 1 default configuration 2 5 10 20 50 The system does not accept a resolution setting of 50 with 4000 and 5000 graduation it would not be possible to present the data on the display 6 3 5 Decimal point D E C P N T It is possible to set the following values 0 default configuration 0 0 0 00 0 000 0 0000 6 3 6 Averages A V E R A G It is possible to set the following values 4 8 d...

Страница 39: ...ADOS S R L Buccinasco MI 492 MTU10006 Rev 4 Page 39 of 49 32 ...

Страница 40: ... set the following values OFF default configuration 1 9 100 6 3 8 Motion band M O T I O N It is possible to set the following values OFF default configuration 0 5 div sec 1 div sec 2 div sec 5 div sec 10 div sec 20 div sec 6 3 9 Zero tracking limit 0 T R A C K It is possible to set the following values OFF default configuration 0 5 div 1 div 2 div 5 div 10 div ...

Страница 41: ...o set the following values CONT Continuous transmission default configuration DE Print on demand 6 3 12 Transmission delay D L Y S N D Values from 0 default value to 200 mS can be defined 6 3 13 Receiver Time out D L Y R C V Values from 0 default value to 200 mS can be defined 6 3 14 Address on RS485 4 8 5 A d d r It is possible to set values ranging from 0 default configuration to 32 6 3 15 Baud ...

Страница 42: ...ADOS S R L Buccinasco MI 492 MTU10006 Rev 4 Page 42 of 49 1200 ...

Страница 43: ... Unloading O L Opening on Gross O NL Opening on Net upon Loading O NU Opening on Net upon Unloading 6 3 17 Relay threshold S E T R 1 S E T R 2 It is possible to set a value ranging from 0 default configuration to the full scale given by the product of graduation by resolution 6 3 18 Dead Band D E A D B 1 D E A D B 2 It is possible to set a value ranging from 0 default configuration to the 2 of ful...

Страница 44: ...tions zero only or Span only To enter the calibration mode the user must enter the instrument control mode and use the F key to select the C A L I B R and press the E key The instrument prepares for the zero scale calibration function and the following message is displayed C A L O Press the F key to switch to Span calibration function and the following message is displayed C A L F S 1 2 3 4 5 wher...

Страница 45: ...ion command and flashes the message on the display Press the E key again and the instrument starts the zero calibration procedure The display shows the waiting time W A I T 5 During the waiting time the load cell signal is integrated and it must stay stable When the wait time expires instrument performs the zero calibration and displays the following message for 2 seconds D O N E and returns autom...

Страница 46: ... of 128 graduation After pressing the E key the instrument prepares to receive the confirmation command and flashes the following writing on the display C A L F S 1 2 3 4 5 Press the E key again and the instrument starts the zero calibration procedure The display shows the waiting time W A I T 5 During the waiting time the load cell signal is integrated and it must stay stable When the wait time e...

Страница 47: ...lity the user must enter the instrument control model and use the F key to select the modality T E S T and press the E key Instrument shows R E L A Y Pressing again the E key the test will start and the message become T E S T flashing Press the N G key to sequentially and individually excite each relay of the instrument Press the C key to return to the operating modality ...

Страница 48: ... flashing Press the E key to confirm the selection made and the instrument initializes the parameters and restarts automatically Press the C key to cancel the initialization request and return to the instrument control menu 6 6 1 Switch controlled initialization Initialization by switch can only be performed at power on time The procedure is the following DIP switch SW1 4 must be ON prior to power...

Страница 49: ...n band OFF 0 5 1 0 2 0 5 0 10 0 20 0 Zero tracking OFF 0 5 1 0 2 0 5 0 10 0 Primary serial port OFF BIDIR CONT DEMAN MODBUS Aux serial port CONT DEMAN Transmission delay 0 200 mS 0 Receiver time out 0 200 mS 0 BaudRate 9600 4800 2400 1200 Address on RS485 0 1 32 0 Relay 1 function OFF C G C NL CNU O G O NL O NU Relay threshold 0 FS 0 Dead band 0 2 FS 0 Relay 2 function OFF C G C NL CNU O G O NL O ...

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