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Hydronix Hydro-View HV02 Скачать руководство пользователя страница 75

 

USING HYDRO-VIEW SERIAL PORTS 

HYDRO-VIEW USER GUIDE 

D0022

 REV 1.06    

75

 

ASCII Hex mode 

The ASCII-Hex mode uses a communications protocol which is designed to be simple to 
implement and test whilst allowing a reasonable degree of performance to be achieved. It 
should be possible to implement a suitable driver from most high level languages such as 
‘C’ or BASIC running on standard PC-compatibles or even BASIC modules in 
programmable controllers whilst ‘trials’ can be performed from standard communications 
programs such as Microsoft Windows ‘Terminal’, Hayes ‘Smartcom’ etc. 

Driver code for such applications is beyond the scope of this manual. 

Scope 

Using ASCII-Hex protocol you can perform tasks via the Hydro-View serial port such as... 

„

 

Read instantaneous (NOW) moisture value. 

„

 

Read average moisture value. 

„

 

Read set-point output status flags. 

„

 

Read average/hold status. 

„

 

Read level input status. 

„

 

Set current material number. 

The Hydro-View communications port acts as a SLAVE device when running the ASCII-
Hex protocol i.e. it will transmit data only in response to requests from your external 
device. 

Future issues of the Hydro-View system firmware will support additional operations via the 
serial port and these will be documented in updates to engineering note EN0005 and later 
incorporated into this manual. 

Physical connection 

The ASCII-Hex protocol can be used on either the RS232 port which is fitted as standard 
to all Hydro-View units or on the optional RS485 port which may be fitted as an optional 
extra. 

Line signalling information 

The ASCII-Hex protocol operates only at 9600 baud, using 8 data bits, 1 stop bit and no 
parity. 

Basic frame format 

Data frames on the communications link are constructed as indicated in the table below. 

Field 

Format 

Description 

STX 

02 

Start of frame. 

STATION Two 

ASCII-Hex 
characters 

Represents the station number of the relevant 
Hydro-View. 
Valid slave station numbers are in the range 01-7F 
(1-127 decimal). 
Reply frames from slave stations have the top bit of 
the station number set and thus reply station number 
fields are in the range 81-FF. 
The purpose of this mechanism is to allow 
discrimination between request and reply data 
frames over a two-wire RS485 link. 

Содержание Hydro-View HV02

Страница 1: ...Hydro View User Guide Refer to Page 13 for Calibration Procedure when used in Batch Weigher system Applications Hydronix part number D0022 Revision 1 06 Revision date 12 June 2007 ...

Страница 2: ...n accordance with any instructions or safety precautions made available or good engineering practice and to thoroughly verify the use of the product in the particular application ERRORS IN DOCUMENTATION The product described in this documentation is subject to continuous development and improvement All information of a technical nature and particulars of the product and its use including the infor...

Страница 3: ...rocedure 13 Calibration 14 Dry Bucket method 15 Method 15 A batch mixing system 17 A continuous process 19 Hydro View quick start 21 Hydro View front panel 21 Display contrast adjustment 21 Keypad 21 Soft key legends 22 Moisture display page 22 Max Min display 23 Help facility 24 Hydro View main menu 24 Trend display page 25 Changing operating values 27 Adjusting set points 28 Material in use 29 A...

Страница 4: ...t 1 Input 2 use 36 Language selection 37 Factory default settings 37 Sensor set up 38 Output set up 38 Sensor calibration 38 Set point set up 38 Other parameters 39 Suggested working values 40 Sensor set up 40 Output set up 40 Sensor calibration 40 Set point set up 41 Other parameters 41 Calibration and sampling techniques 43 Recommendations for best performance 43 Equipment required 44 Taking the...

Страница 5: ...system using RS232 51 Example a four bin grouped system using RS485 52 Installation 55 Power supply connections 55 Adjusting the Hydro View mains operating voltage 56 Field connections 56 Sensor Connections Hydro Probe II 57 Installation guidelines 57 Connecting the Hydro Probe II to the Hydro View 57 Sensor Connections Hydro Probe I 58 Analogue output connections 59 Digital input connections 60 R...

Страница 6: ...ons 72 RS485 termination 72 Data log mode 73 Batch print mode 74 ASCII Hex mode 75 Scope 75 Physical connection 75 Line signalling information 75 Basic frame format 75 Frame types 76 Request frame types command set 77 Timing constraints 78 ASCII Hex protocol examples 78 Appendix 79 Access codes 79 Electromagnetic Compatibility Directive 89 336 EEC 79 Index 81 ...

Страница 7: ...Group moisture display 50 Figure 16 Twin bin grouped system 51 Figure 17 Four bin grouped system 53 Figure 18 Panel mounting the Hydro View 55 Figure 19 Hydro View mains transformer 56 Figure 20 Connecting the Hydro View to a Hydro Probe II 57 Figure 21 Sensor extension cable connections 58 Figure 22 Hydro View rear panel 58 Figure 23 Hydro View main circuit board 59 Figure 24 Analogue output wiri...

Страница 8: ...ions of Hydro Probe Sensors which have now been superseded by the Hydro Probe II Hydronix recommends that all new installations should use the latest available sensor cable which should be connected to the Hydro View according to the instructions in the Hydro Probe II User Guide ...

Страница 9: ...panel cut out Overall depth including IEC connector is 205mm Scope of this document This guide describes Hydro View model HV02 and associated options as indicated on the rear panel label Earlier versions of the Hydro View do not contain all the features of the HV02 and you should refer instead to the appropriate guide Organisation of this document This guide is organised into the following section...

Страница 10: ...ype of application is referred to as a Batch Mixing application in this manual Where the moisture content of a continuous stream of material is required The material passes the face of the sensor only once but the moisture value is then used as a feedback signal in a control loop An example of this would be a Hydro Skid sensor mounted on the output conveyor of a continuous mixing system This type ...

Страница 11: ...o Probe sensor to the Hydro View in the standard way Connect the analogue output to the batch computer and set the output variable to AVERAGE The output range should be set according to the working moisture range of the material for most concrete batch applications the default values of 0 and 20 are appropriate Refer to Installation later in this document for wiring details You may be tempted to s...

Страница 12: ...LWAYS ensure that you are getting a meaningful input to the Hydro View there is little point wasting time performing calibrations on the system if the sensor is covered by stagnant material or is otherwise subject to inconsistent material flow Verify this first using the trend recorder display which is a convenient way of observing the material passing the probe ALWAYS use additional sensors where...

Страница 13: ...f sampling and drying Therefore great care must be taken when gathering and drying samples The Hydro View is provided with factory default values stored in memory These default values are for initial installation set up and allow the system to be used straight from the box To accurately calibrate the system two samples of aggregate are required with at least 2 3 moisture minimum of 1 difference an...

Страница 14: ...he next batch is started The Average Unscaled Input will remain frozen on the display until the start of next batch Drying the sample to calculate the moisture content Thoroughly mix the sample and remove approximately 1 Kg for drying Reseal the container Accurately weigh the this sample record this as A Dry the sample until all traces of moisture have bean removed This can be done by repeatedly w...

Страница 15: ...r further assistance Exit the calibration page by pressing the softkey as follows A pop up menu will appear asking you to confirm the changes Press When a moisture content with a difference of 2 3 is available repeat from 1 above Dry Bucket method This procedure can be used on initial calibration when the silo can not be re loaded with aggregate with moisture levels with a difference of 2 3 It wil...

Страница 16: ...DRY BUCKET METHOD 16 HYDRO VIEW USER GUIDE D0022 REV 1 06 Dry a sample of the aggregate in the bucket and record it s moisture content enter this figure into the Sensor calibration page as Moisture one ...

Страница 17: ...ensor Set up menu Dribble feed approach The second scheme which is useful only when there are few time constraints on the mix cycle uses the set point outputs to add water to the mixer The water is added fairly slowly in this case since it must be mixed evenly before the reading is valid To speed things up a little the second set point output could be used to provide a coarse water feed in the cas...

Страница 18: ... should be avoided to prevent damage to the mix ALWAYS position the sensor so that it is easily inspected without removal i e so that it can be clearly seen from an inspection door NEVER reduce the digital filter constants so low e g 0 01V as to make the signal response very slow although this will produce a stable reading it will probably be the incorrect reading In particular watch for mix cycle...

Страница 19: ...ance ALWAYS site the moisture sensor in the most appropriate place for the application preferably as near to the control point as possible to minimise time lag without compromising the homogeneity of the material passing the sensor The position chosen should ensure that the sensor is covered by sufficient material at all times during measurement and is not in an area prone to build up of waste mat...

Страница 20: ...20 HYDRO VIEW USER GUIDE D0022 REV 1 06 Notes ...

Страница 21: ...that at very low temperatures liquid crystal displays exhibit reduced contrast and this may be particularly noticeable immediately following the application of power to the unit It may be necessary to adjust the contrast control several times until the unit has established its normal operating temperature in your application It is recommended that you leave power applied to the Hydro View wherever...

Страница 22: ... down Moves the highlight cursor to the next menu item Increment value When editing a numeric value causes the value to be incremented Holding the key down will speed up the count Decrement value When editing a numeric value causes the value to be decremented Holding the key down will speed up the count More Indicates more information available Record Start recording data Moisture display page Whe...

Страница 23: ... p49 It is legitimate for the moisture value to display a negative value in some processes this is a useful measurement related to water absorption whilst in others it may indicate that the calibration of the sensor is incorrect Note that the Average value is not indicated immediately but is shown the first time that the value is computed following the application of power to the Hydro View Thus s...

Страница 24: ...HELP FACILITY 24 HYDRO VIEW USER GUIDE D0022 REV 1 06 Help facility Pressing will change the display to show the options available at any point ...

Страница 25: ...ess code Allows access to additional operations These options are considered to be useful to most operators of the unit and therefore do not require any access code Additional facilities are described in Advanced user options and configuration p31 Trend display page The trend display allows the moisture content to be monitored over a period of time It is of particular use under the following condi...

Страница 26: ...sor set up menu You can select the trend display from any non menu display page using the following keys Press to display the Main menu The moisture display item is highlighted Press to highlight the trend display item Press again to select the trend display page Once the record option has been chosen the most recent 100 values will be recorded continuously until the pause option is chosen even if...

Страница 27: ...the soft key legends will change to allow the value to be edited in a pop up window Figure 10 Changing a value Holding down or will allow the value to be changed rapidly the rate accelerates as you hold the key down The value is bounded at lower and upper limits beyond which it cannot be changed and sometimes these limits will be based on the current values of other items Press or keys to accept t...

Страница 28: ... Skid sensor or checking the moisture content out of a mixer using a Hydro Mix sensor Simple control of water addition by using the outputs to turn on a water valve up to a pre set moisture reading Each set point operates independently and may be programmed with the following parameters Parameter Description Variable Whether the Now or Average value of moisture content is to be used as the control...

Страница 29: ...n of material number may be controlled by an external system in which case you will not be able to adjust the material number from the Hydro View keypad although the current setting will be displayed To select the material number from the moisture display page Press to display the Main menu The moisture display item is highlighted Press to highlight the Material in use item Press again A pop up wi...

Страница 30: ...MATERIAL IN USE 30 HYDRO VIEW USER GUIDE D0022 REV 1 06 Notes ...

Страница 31: ... the RS232 and RS485 communications ports Input 1 use Selects how digital input 1 will be used Input 2 use Selects how digital input 2 will be used Language Allows the operating language of the Hydro View to be chosen from a list of supported languages Factory defaults Allows factory default parameters to be restored Factory test Executes a set of diagnostic programs on the Hydro View to verify op...

Страница 32: ...on display Further details will be found in Calibration and sampling techniques on page 42 Sensor set up menu Hydronix moisture sensors output a voltage signal which varies according to the moisture content of the material However the signal may be disturbed by the presence of other materials such as mixer blades passing in close proximity to the sensor These unwanted signals form noise in the sys...

Страница 33: ...isture value displayed on the trend recorder display Range 99 99 Æ 99 99 Trend upper 20 00 Sets the maximum moisture value displayed on the trend recorder display Range 99 99 Æ 99 99 Alarm Lo 0 00 Sets the minimum moisture value allowed before an alarm occurs Range 99 99 Æ 99 99 Alarm Hi 20 00 Sets the maximum moisture value allowed before an alarm occurs Range 99 99 Æ 99 99 Output set up menu The...

Страница 34: ...mmed in the Sensor Set up menu When the moisture value is outside the range programmed in the Output Set up menu The internal beeper of the Hydro View will give an alarm if the Audible Alarm parameter is set to On When an alarm occurs the beeper can be turned off by pressing although the relay output will remain energised Material mode The material calibration table number to use at any instant ca...

Страница 35: ...multi drop communication on a simple twisted pair cable permitting several moisture measurement channels to be interfaced with a single communications port Permitted options are Disable RS485 port is unused Data Log The current moisture values are transmitted periodically as determined by the Data Log Rate parameter ASCII Hex Provides two way communication between the Hydro View and another system...

Страница 36: ... occurred Input 1 Input 2 use Two general purpose digital inputs are provided on the Hydro View However different applications may demand that these be used in different ways and therefore it is possible to configure each input for a specific use The options available are Ave Hold Input is used to control batch averaging of the moisture value Relevant only to batch applications such as ready mix p...

Страница 37: ...able languages shown Factory default settings Prior to shipment by Hydronix the Hydro View operating parameters will have been set to default values Since these are quite numerous it is useful to be able to reset them all to a known state particularly when first commissioning a system Selecting Factory defaults from the main menu produces a display referring the reader to this manual This is to av...

Страница 38: ...p s 1 0 Trend lower 0 00 Trend upper 20 00 Alarm Lo 0 00 Alarm Hi 20 00 Output set up Parameter name Default Value Your value Notes Minimum 0 00 Maximum 20 00 Calibrate 0 00 Variable NOW Sensor calibration Parameter name Default Value Your value Notes Unscaled i p 1 4 15 Moisture 1 0 00 Unscaled i p 2 28 40 Moisture 2 11 00 SSD 0 00 Set point set up Parameter name Default Value Set point 1 Set poi...

Страница 39: ...REV 1 06 39 Other parameters Parameter name Default Value Your value Notes Audible Alarm On Material Mode Keypad RS232 Usage Data Log RS485 Usage Disable Data Log Rate 1 0 Station number 1 Number of Slaves 1 Input 1 Use Ave Hold Input 2 Use Coarse Fine Language English ...

Страница 40: ...tch mixer Continuous process Type 1 1 1 Samples 5 751 1002 A H delay 0 5 0 0 Sync delay 0 00 0 00 0 00 dV Coarse 1 00 0 02 0 02 dV Coarse 1 00 0 05 0 02 dV Fine 0 10 0 01 0 02 dV Fine 0 10 0 02 0 02 Minimum volts 0 5V 0 5 0 5 Maximum volts 12 0V 12 0 12 0 Trend step s 1 0 1 0 1 0 Trend lower 0 00 0 00 0 00 Trend upper 20 00 20 00 20 00 Alarm Lo 0 00 0 00 0 00 Alarm Hi 20 00 20 00 20 00 Output set ...

Страница 41: ...d As required Hysteresis N A 0 25 As required Delay s N A 2 2 Other parameters Parameter name Batch weigher Batch mixer Continuous process Audible Alarm On On On Material Mode Keypad Keypad Keypad RS232 Usage Batch print Data log Data log RS485 Usage Disable Disable Disable Data Log Rate N A 1 0 1 0 Station number 1 1 1 Number of Slaves 1 1 1 Input 1 Use Ave Hold N A N A Input 2 Use N A Coarse Fin...

Страница 42: ...SUGGESTED WORKING VALUES 42 HYDRO VIEW USER GUIDE D0022 REV 1 06 Notes ...

Страница 43: ... achieve Great care should therefore be taken when conducting these tests A variety of laboratory techniques exist The desiccation test is recommended in that it is an absolute measurement with repeatable results even when carried out by different operatives and it is not dependent on having to know the specific gravity of the material being tested As will be appreciated no matter how much care is...

Страница 44: ...llecting samples from the flow of material Plastic bucket Ideally with plastic lid Taking the samples You should always consider how the sensor is operating when taking your samples and should collect your samples in a manner similar to the way in which the sensor sees the material Batch mixer system sampling method In this situation the preferred calibration samples would be taken from the dry ma...

Страница 45: ... burner electric oven or microwave oven are suitable Proceed as follows Weigh the empty container to obtain its tare weight Record this as value A Add the sample of material to the container and weigh again Record this as value B Dry the material using the heat source checking periodically by weighing until two measurements taken three minutes apart show no significant change If an open tray is us...

Страница 46: ...ept of the moisture calibration line which the Hydro View will use to calculate the moisture reading from the unscaled sensor input When you finish entering the values you will be asked to confirm whether or not the system is to be updated If you accept then the material calibration table will be updated and if this material number is currently in use the sensor calibration will be changed What ha...

Страница 47: ...CALIBRATION AND SAMPLING TECHNIQUES HYDRO VIEW USER GUIDE D0022 REV 1 06 47 M2 M1 U1 U2 c Moisture Unscaled input Figure 14 Sensor calibration line ...

Страница 48: ......

Страница 49: ...ity results in the generation of three additional moisture variables in the system These are referred to as Group M1 The average value of the NOW variables across all grouped units This might be used in a large batch or continuous mixing application where there is some advantage in measuring the moisture at several points Group M2 The average value of the NOW variables across all grouped units whi...

Страница 50: ...t a communications error occurs between the master and a slave the slave station will be taken out of the system for a few seconds to allow it to recover and automatic retries will be performed periodically These errors are most likely to occur during power up power down of slave systems A slave unit which has been powered down will be brought back on line automatically within a few seconds of pow...

Страница 51: ...32 port whilst that on the right would be configured as for ASCII HEX on RS232 with a station address of 1 The two units would be coupled together with a cross over RS232 cable The analogue output of the master unit would be connected to the batch computer and the analogue output variable set to Group Average This variable is the batch average of the two channels which is what is required The Grou...

Страница 52: ...f 1 2 or 3 as appropriate The units would be coupled together with a single twisted pair RS485 cable as described in Installation The analogue output of the master unit would be connected to the batch computer and the analogue output variable set to Group Average This variable is the batch average of the four channels which is what is required when all four bins are feeding at the same time The Gr...

Страница 53: ...GROUPING CHANNELS HYDRO VIEW USER GUIDE D0022 REV 1 06 53 Figure 17 Four bin grouped system ...

Страница 54: ...EXAMPLE A FOUR BIN GROUPED SYSTEM USING RS485 54 HYDRO VIEW USER GUIDE D0022 REV 1 06 Notes ...

Страница 55: ...aining bar and retaining screw are used to clamp the Hydro View unit against the front panel Do not over tighten the retaining screw just sufficient torque should be applied to hold the unit in place against the control panel Power supply connections Mains power is connected to the Hydro View using a standard IEC mains connector The operating voltage of the unit can be selected by moving an intern...

Страница 56: ...nal blocks located on the rear panel of the instrument You should refer also to the wiring labels fitted to the lid of the Hydro View The terminals numbered 1 through 21 are allocated as follows Terminal group Group function Terminal Description 1 5 Moisture sensor connections 1 15V sensor power 2 0V sensor power return 3 15V sensor power 4 0 10V sensor input 5 0 10V sensor input 6 7 Analogue outp...

Страница 57: ... cable screen is not connected at the control panel Ensure that there is continuity of the screen through any junction boxes Keep the number of cable joins to a minimum Three twisted pairs required 6 cores total cable with 22 AWG 0 35mm2 conductors Screen shield Braid with 65 minimum coverage plus aluminium polyester foil 500 Ohm resistor The recommended resistor is an epoxy sealed precision resis...

Страница 58: ...it The connection diagram is given in Figure 21 The cable should be 5 or 6 core screened multi core with 0 5mm2 conductors Note that it is NOT satisfactory to use a 4 core cable with terminals 2 and 5 connected at the Hydro View end this will lead to common impedance type interference problems The 15V power rail is protected internally against short circuits by a 500mA plug in fuse FS1 which may b...

Страница 59: ...ocated close to the analogue output terminals 6 and 7 Figure 23 Hydro View main circuit board Wiring details are shown in Figure 24 Note that the analogue output shares a common supply rail with the internal 24V supply connected to terminal 17 see Digital input connections on page 60 for further details The working range of the analogue output is set in the Output set up menu see p33 0 10V 4 20mA ...

Страница 60: ...ital inputs terminals 14 15 share a single common terminal 16 and are arranged internally as shown in Figure 25 Terminals 13 and 17 are connected to an internal dc power supply which may be used as an excitation supply for voltage free contacts if required as shown in Figure 26 Figure 24 Analogue output wiring ...

Страница 61: ...er typically 100R in series with 0 1uF across the contacts when driving inductive loads You should also ensure that such loads are fitted with suitable transient suppressors at the load to reduce electromagnetic interference The relay contacts are rated at 240Vac 500mA resistive An internal series fuse FS3 limits the TOTAL load taken by all three relays to 500mA Plug in replacement relays and fuse...

Страница 62: ...is as follows Close relay output on terminal 20 and open relay on terminal 21 Read state of SW1 on terminal 15 Open relay on terminal 20 and close relay on terminal 21 Read state of SW2 on terminal 15 Repeat from beginning as required The Hydro View requires that the state of switches SW1 and SW2 remain stable for two multiplexing cycles before it updates its internal values To avoid excessive wea...

Страница 63: ...onstructions e g aggregate bins High value computer equipment connected Although the Hydro View model HV02 is fitted with opto isolation on the sensor input these will not prevent damage in all cases Precautions should still be taken to avoid damage by lightning in areas where there is a known risk We would recommend the installation of suitable lightning barriers to all conductors in the sensor e...

Страница 64: ...e state of the digital inputs To use the factory test display 1 Remove power to the Hydro View 2 Disconnect all wires connected the Hydro View terminals after first noting their positions 3 Connect jumpers in the positions shown in Figure 29 If you wish to test the RS232 port you will need to use a RJ11 to 9 pin D type connecting cable available from Hydronix 4 Re apply power and enter pass code g...

Страница 65: ...ion problems The table below lists some symptoms that may be encountered during installation of the Hydro View If you are unable to solve the problem please contact your Hydronix distributor Symptom Probable cause Remedy Blank display Display contrast set incorrectly No mains power Adjust contrast See Display contrast adjustment p21 Check mains supply and IEC inlet fuse If fuse blows repeatedly co...

Страница 66: ...ary Check external wiring Replace plug in relay No serial communications Incorrect configuration Check that the serial port has been enabled for the purpose you require If using RS485 verify that the optional RS485 module is installed Sensor installation faults The moisture display reading being excessively low or excessively high or not changing at all would normally suggest a fault This may be c...

Страница 67: ...ly but should still be in the range 5 to 15 5V If this test fails there may still be a fault in the extension cable wiring but also possibly a fault either internal to the sensor or in the short length of cable connecting to the sensor 5 Verify that the power supply voltages for the sensor are present at the sensor end To do this you will need to unscrew the Bulgin connector on the extension cable...

Страница 68: ... GUIDE D0022 REV 1 06 simulates a medium wet material and with the black rubber face in contact with the ceramic plate simulates a very wet material 8 9v 5 0v 1 7v Block 1 Block 2 Rubber Face Up Block 3 Rubber Face Down Figure 30 Using test blocks ...

Страница 69: ...INSTALLATION HYDRO VIEW USER GUIDE D0022 REV 1 06 69 Notes ...

Страница 70: ......

Страница 71: ...ble communication COM port please ask for details RJ11 Pin Signal relative to Hydro View PC compatible 9 way 1 Request to send biassed internally to active state 8 2 Transmit data 2 3 0V 5 4 0V 5 Receive data 3 Note to ensure that the system meets the requirements of EMC directive 89 336 EEC the cable should be fitted with a ferrite rf attenuator close to the RS232 socket of the Hydro View when th...

Страница 72: ...ctor only one orientation is possible Refit the lid and screws RS485 connections The Hydro View implements RS485 using a two wire interface This is shown in Figure 32 Shielded twisted pair cable is recommended for EMC purposes The shield should be connected to ground at one end only to minimise capacitive coupling the twisted pair cable will minimise magnetic coupling RS485 termination Note that t...

Страница 73: ... rate The data format used is as follows STX NNN NN AAA AA CRLF where STX is the ASCII start of text character hex 02 NNN NN is the NOW moisture value in the range 99 99 to 99 99 AAA AA is the AVERAGE moisture value in the range 99 99 to 99 99 CRLF is the ASCII carriage return line feed combination hex 0D hex 0A The data rate format used is 9600 baud 8 data bits no parity 1 stop bit This cannot be...

Страница 74: ...ange 99 99 to 99 99 AAA AA is the AVERAGE moisture value in the range 99 99 to 99 99 CRLF is the ASCII carriage return line feed combination hex 0D hex 0A The data rate format used is 9600 baud 8 data bits no parity 1 stop bit This cannot be altered The batch print format changes when the unit is configured as a Master on the other serial port The Hydro View provides a report at the end of a batch...

Страница 75: ... protocol i e it will transmit data only in response to requests from your external device Future issues of the Hydro View system firmware will support additional operations via the serial port and these will be documented in updates to engineering note EN0005 and later incorporated into this manual Physical connection The ASCII Hex protocol can be used on either the RS232 port which is fitted as ...

Страница 76: ...es the request and issues an acknowledge frame back to the master It processes the request and issues a reply frame back to the master containing some data It does not process the request because the request was invalid although not corrupted An acknowledge frame is then sent containing an error code It does nothing In this case the slave may have detected an error usually corruption but cannot re...

Страница 77: ...ture values from the slave together with some status flags Request data Format Description Material number HH Two hex digits one byte representing the material number to use in the range allowed by the Hydro View currently decimal 1 10 If this field is set to 00 then the material number in the slave will not be changed The slave will not allow its material number to be changed unless it is configu...

Страница 78: ...o prevent subsequent transmissions from being jammed by a late slave reply ASCII Hex protocol examples Read Moisture request The following request frame will read the moisture data from station number 3 setting the material number to 5 in the process ASCII Character code in hex Description 02 STX 30 33 Station number 03 30 31 Request code 01 read moisture 30 35 Material number 05 30 37 Checksum 07...

Страница 79: ... diagnostic displays and calibrate sensor 213 Engineering level other than communications related parameters 336 Full engineering access 1459 Reset factory defaults and display factory test page Electromagnetic Compatibility Directive 89 336 EEC When installed and operated according to the instructions given in this guide this equipment conforms to the requirements of Council Directive 89 336 EEC ...

Страница 80: ...ELECTROMAGNETIC COMPATIBILITY DIRECTIVE 89 336 EEC 80 HYDRO VIEW USER GUIDE D0022 REV 1 06 Notes ...

Страница 81: ...panel 21 Fuse FS1 58 FS2 61 FS3 61 Gate signal 11 Grouping channels 12 Groups 49 Help 24 key 21 Hydro Mix 16 Hydro Probe 11 Hydro Skid 18 Inputs digital 36 60 Installation 55 Keypad 21 Language 31 37 Lightning protection barriers 63 Main menu 24 Material in use 25 29 selection 61 selection mode 34 Moisture average 23 Average 11 display 22 group values 23 max min 23 now 12 Now 23 Power supply 55 Re...

Страница 82: ...82 HYDRO VIEW USER GUIDE D0022 REV 1 06 Notes ...

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