Weighing Indicator/Controller SMW- HR High Res
Contents
1. m Command Action Framing Address Character Separator Command o1 SE x Response from Instruments A response from the instrument is always sent the only exception being when a broadcast command is issued Broadcast commands will only be accepted for Action amp write commands The responses are as follows Command read 26 Mantracourt Electronics Limited SMW HR User Manual Response Returns the requested value specified by the command The length of the alpha numeric data is not fixed max length will be 40 characters Returned data will be terminated with a CR Examples of returned data are as follows 2 34 lt CR gt 56 78 lt CR gt 1999 99 lt CR gt GEORGE lt CR gt If the Command is not understood by the instrument then a is transmitted followed by a lt CR gt is sent by the instrument Command write If the command amp value is accepted by the instrument then a lt CR gt is transmitted if not accepted a followed by a lt CR gt is sent Command action If the command is accepted by the instrument then a lt CR gt is transmitted if not accepted a followed by a lt CR gt is sent Response timing From receipt of the host s terminating lt CR gt to a response from the instrument is expected to be within 50mS Continuous output stream By sending an XON the instrument will transmit it s display value2. eee eer acer e Era a SHE 19 Serial Communication ProtocOlis TO erae EIN SES ey IRIS ea vo aUe 19 MANTRABUS Format selected when CP is 128 19 leor 19 Updatiligz rico e IR ed ve cem er vei dU deese nen devices 19 Comirunications Comiarids i e dos ane ER opi pe ied sr e Roa E eR PE REPRE e 20 Command 1 Request for alUdataz o irre RD E EPI A EO EOS he VE RT REA Pus 20 Response t Command tec rope cess dene ced en ones ers Tees Pre oleh e OR Ve ER Pests 21 COMMAND 2 REQUEST DISPLAY open ehe Bene Pepe y Vo led Ton oso 22 RESPONSE to Command 2 sss eresio t EERS 22 COMMANDS 4 TO 34 Write data to SMW HR Parameter 22 Response to COMMAND 4 to 34 eons Exe uere dee ERE E AP E ERE eh e RI SR TR Eee HEU Eines 22 Register Allocation ore eR gru Sec a ene baa vane verse ke gels cues Mes pres aves ek exo pasa Gg ee r aii 24 ASGII Protocol E 26 Fist of commands ates eens Que deed 28 SMW HR Printer Interfa
3. The Configurable Parameters A series of parameters or programmable functions are provided in the SMW HR to allow the user good flexibility for monitor and control applications These parameters are included as constants in the SMW HR database and are accessed and checked via the programmer keypad or the communications port Data which is entered by the user is retained by EEPROM for up to 10 years without back up power New data when entered overwrites previous entries when the key is pressed unless the EEPROM has been disabled via the communications port Section 1 User Engineer Configurable Parameters Password Protection A 4 digit password number must be entered The number is accessed when PASS is displayed At this point it is necessary to enter Passport number 001111 Code Function Value trAn Transducer Number 000000 to 000012 PASS Setpoint 1 001111 SEtPt1 In Flight 1 999999 In Ft1 Setpoint 2 999999 SEtPt2 In flight2 999999 In Ft2 Hysteresis for setpoint 1 amp 2 999999 HYSt Latch for setpoint 1 amp 2 999999 LAtCH 000000 to 000003 8 Mantracourt Electronics Limited SMW HR User Manual ACtion Bit value 1 Bit value 2 Bit value 4 Bit value 8 Bit value 1 Bit value 3 Bit value 6 ACtion Bit value 1 Bit value 2 Bit value 5 Bit value 1 Output action invert SETPT1 invert SETPT2 invert an op Disp Gross 6 Setpoint Gross 2 An op Gross 4 Printer Gross Output action 28 Disp
4. Tx Rx amp Rx Terminate screens at pin 1 of the input The screens should not be connected at the host port Use screened twisted pair cable e g RS 626 4761 Terminate screen at pin 1 of the input The screen should not be connected at the host port Pin 1 of the input should be connected to a good Earth The Earth connection should have a cross sectional area sufficient enough to ensure a low impedance in order to attenuate RF interference Cable Information For Reference only Country Supplier UK Farnell 118 2117 Individually shielded twisted multipair cable 7 0 25mm 2 pair Tinned copper drain Individually shielded in polyester tape Diameter 4 1mm Capacitance m core to core 115 pF amp core to shield 203 pF UK Farnell 585 646 Individually shielded twisted multipair cable 7 0 25mm 3 pair Tinned copper drain Individually shielded in polyester tape Diameter 8 1mm UK Capacitance m core to core 98 pF amp core to shield 180 pF 626 4761 Braided shielded twisted multipair cable 7 0 2mm 1 pair Miniature twin round Diameter 5 2 mm Capacitance m core to core 230 pF amp core to shield 215 pF 4 Mantracourt Electronics Limited SMW HR User Manual Environmental Requirements SMW HR units can operate in any industrial environment provided the following limits are not exceeded at the point of installation Operating 10 C to 50 C Temperature Humidity 95 non condensin
5. 9 SMW HR Wall Mount High Resolution Weighing Indicator Controller User Manual www mantracourt co uk THE QUEEN S AWARDS FOR ENTERPRISE mE mantracourt SMW HR Surface Mount Amplifier Manual Contents Pages Chapter 1 Introduction to SMW HR tes nEss ites Ers EKES Ss eere 2 Chapter 2 Installing osa EKSENE ESS a 4 Environmental Requirements 5 1 E ER 5 CONGILIONS I 5 Terminal Confiectiors RE ure e Oeo ET R E EEEE EE EE AUE aa EEEE ee ERN Es eda eui 5 Chapter 3 The SMW HR Controls and Parameters sccsscccssccsssccssccessscecsscecsseseesssesssesssceeseceeseeeeeees 7 The Configurable Parameters eorn roy t 8 Section 1 User Engineer Configurable Parameters 8 Section 2 Calibrators Configurable Parameters ehh ehh ehh he ehe ehe eene enne 9 Chapter 4 Strain Gauge Input to the 5 12 The Strain Gauge Inputs 12 Calibrations lsc ye baa aa Seu Weve ds 13 4 Point line
6. 22 05 07 12 03 04 Mantracourt Electronics Limited SMW HR User Manual 29 4 7 Digitec 6700 series As ITT Printer 0 4 8 9 Amplicon 24 and AP40 9 inverts Text 10 Eltron LP2142 The label file must be called MEL and the label must contain a LOG NUMBER THE DISPLAY VARIABLE amp a LABEL not zero 12 ASCII string on print command Provision is made in the SMW for communications via one of two module options LC1 The 20mA current loop module for connection to an IF25 interface LC3 An RS232 485 isolated module for connection to a PC or PLC in a single or multiple function Connections for these options are shown Figure 7 1 LC1 Current Loop RN GO AGRAGAGAO NO CO BAUD SETTING 25 see diagram over page Figure 7 2 IF25 Connecting Multiple SMW HRs MAX 25 SMW HR s TO OTHER IF 25 s RX RX TX TX RX RX TX TX EXP ADP IF25 CURRENT LOOP RS232 INTERFACE SUPPLY VOLTAGE 110 240 VAC HOST CONTROLLER Connecting Multiple SMW HR to the IF25 Interface Notes 1 Maximum loop voltage is 50V dc 2 Loop is isolated from host and SMW HR Loop should be earthed via Rx on IF25 254 3 IF25 used for up to 25 SMW 4 At 19 200 Baud max cable length is 100m metres using cable type BICC H8085 30 Mantracourt Electronics Limited SMW HR User Manual Figure 7 3 LC3 Isolated RS232 485 Mode Connections Note LK2 when multi droppi
7. Peak 56 Setpoint Peak 12 An op Peak 024 Printer Peak Peak can be either Gross or Net value by selecting bit value 8 or not Example peakhold of gross value on display amp An op 8 128 512 Peakhold can be reset from LR contact OP LO OP Hi A tArE SCStdY rESOL CP SdSt LAbEL Log no Section Output Low for An op scaling Output high for AN op scaling Auto Tare value Not applicable will default to Display resolution of last digit This function is performed on the display data only and does not affect the comms or printer Comms Protocol Selects printer or FAST format CP 0 127 sets Printer type 128 sets MANTRABUS communications protocol See comms and printer section of manual for further details Sets Serial Device Station Number if CP 128 This sets a unique address code for each SMW HR See comms section Sets label for the Printer if CP 0 127 See the printer section Log Number A range of numbers 0 to 19 999 is available Any sequential number logging activity can be preset as desired between these numbers The number will reset to zero after 19 999 The log number is not saved on power fail and resets to zero on power up 2 Calibrators Configurable Parameters Password Protection A 4 digit password number must be entered The number is accessed when PASS is displayed At this point it is necessary to enter Passport number 009999 999999
8. The RS232 port is available for Time Data or data only printers to be used logging all desired activities Baud speeds between 300 and 19200 are programmable The power supply module is available for 220 240V AC and 110 120V AC or 9 32 and 24 48V DC 2 Mantracourt Electronics Limited SMW HR User Manual Figure 1 1 Bagging Bagging Hopper suspended on 3 Strain Gauges only 2 shown Printer Control Output Analogue Remote Output Indicator Figure 1 2 Drum Control Output Hatform placed on 4 Grain Gauges Figure 1 3 Mixing Control by PC RECIPE MIXING INGREDIENTS Strain Gauges Weighing Point Control Outputs Analogue Retransmission Computer or PLC Recorder RS232 Mantracourt Electronics Limited SMW HR User Manual Chapter 2 Installing the SMW HR In order to maintain compliance with the EMC Directive 2004 108 EC the following installation recommendations should be followed Inputs Comms Port Analogue Output Use individually screened twisted multipair cable e g FE 585 646 The pairs should be pins 1 amp 6 pins 2 amp 5 pins 3 amp 4 Terminate all screens at pin 1 of the input The screens should not be connected at the transducer end of the cables Use individually screened twisted multipair cable e g FE 118 2117 The pairs should be Tx amp
9. 0015 linearity 4 point linearisation and conversion of mV V value into engineering units Optional facility to download mV V value to a Computer for conversion using a third order polynomial equation Auto Tare values can also be viewed and manually changed if required Auto tare value is retained on power down Auto Tare is affected from the field terminals 1 25mV V to 30m V V selectable ranges 1 25 2 5 5 7 5 15 30mV V 0 000596 FSO C typical with 2 5 mV V sensitivity selected 0 001796 reading C 0 000796 reading C Typical 9 6V DC nominal 160mA maximum By sense wires to compensate for cable connection lt 0 002 reading over 90 days Programmer keypad selectable between 0 1 and 25 5 seconds Set by programmer keypad up to 64 standard updates 1 500 000 Max Drive Typical Accuracy of FSD Capability of reading 20V 1K 0 08 0 08 2mA 0 08 0 08 130V RMS or DC to any other port Control Alarm Relay Output RR1 2 SPCO relays SETPT1 and SETPT2 Contact Rating 50V 500mA AC Setpoint In Flight Compensation Hysteresis Latching and Relay Inversion are set digitally using programmer keypad and display in engineering units Hysteresis value applies to both SETPT1 and SETPT2 Fail safe operation by setting inversion to give normally energised operation Latching Reset By volt free contact to field terminals or by communication 34 Mantracourt Electronics Limited SMW HR User M
10. 4 to 22 OFFH Station No Command No MSN NIB7 NIB6 NIB5 NIB4 NIB2 LSN CHKSUM Where MSN Most significant nibble of data NIB7 2 Nibble of data between MSN and LSN LSN Least significant nibble of data with MSBIT set CHKSUM The following EXOR d with each other Station number command number MSN NIB7 2 LSN with MSBIT set Example To change Dp to 3 on a SMW HR whose station number is 47 The following data is sent OFFH 02FH 00FH 00 00 00 00 00 00 00 83H 0A3H Note MSBIT set Response to COMMAND 4 to 34 If the data has been accepted by the SMW HR then the following acknowledgement string is transmitted by the SMW HR Station number 06H ACK If there are any errors with the data received by the SMW HR then the following Not Acknowledgement NAK string is transmitted by the SMW HR Station number 015H NAK 22 Mantracourt Electronics Limited SMW HR User Manual Commands 100 onwards These commands perform action and require only the command number to be transmitted to the SMW HR i e To disable the keypad of device 47 using command 105 the following data is sent OFFH 2FH E9H C6H MS BIT SET These commands will be acknowledged by an ACK or if an error a NAK proceeded by the station number Example of a Basic Code to Communicate with MANTRABUS open the serial port with no handshaking OPEN COM2 4800 N 8 1 RS DS BIN FOR RANDOM AS 1 request display from device 1 Frame FF Station No Comma
11. E Excitation 12 347 10 amp sense Power wiring optlons LOAD nd For ofhers see manual IN nput CELL 240 110 Input Vac S Sense E 120V ADDITIONAL 420 ma 120V OTROS WATCHDOG oJ v 1 0 10 Volt LED Please tick the appropriate box READ INSTRUCTION MANUAL BEFORE INSTALLATION NOTE THE LOADCELL amp CONTACT INPUTS ARE NOT INTENDED TO BE CONNECTED VOLTAGES TO EARTH ABOVE 50V ac OR 120V dc PROGRAMMING PASS PASSWORD HYS HYSTERESIS dA DISPLAY AVERAGING Cp COMMS PROTOCOL GUIDE SP1 SET POINT 1 OA OUTPUT ACTION PEAK HOLD L b LABEL FOR PRINTER IF1 IN FLIGHT 1 CALL CALIBRATION LOW OPL OUTPUT LOW Un LOG NUMBER See Manual SP2 SET POINT 2 CALH CALIBRATION HIGH OPH OUTPUT HIGH r DISPLAY for full data IF2 IN FLIGHT 2 At AUTO TARE dP DECIMAL POINT RESOLUTION Figure 2 2 The 6 Wire Strain Gauge SMW HR TERMINAL BLOCK SCREEN INPUT OUTPUT OUTPUT INPUT 4 Figure 2 3 The 4 Wire Strain Gauge SMW HR TERMINAL BLOCK SCREEN EXCITATION SENSE OUTPUT OUTPUT SENSE EXCITATION 6 Mantracourt Electronics Limited SMW HR User Manual Chapter 3 The SMW HR Controls and Parameters All user controls displays and indicators are mounted on the front panel which provides a 6 digit optionally backlit LCD display and 8 flush mounted keys Figure 3 1 Pro
12. SEnS set to 1 i e 2 5mV V The A D Sample frequency amp Notch filter can be set using the FILtEr setting The A D can sample at frequencies of 10Hz to 1KHz The value set in FILtEr is calculated as FILTER 19531 Required sample in Hz The resolution of the A D is changed with the value set in FILtEr as outlined in the table below Filter Data o p rate in Hz Resolution 3db Frequency amp first notch of filter in bits in Hz 1953 10 19 2 62 781 25 17 5 6 55 390 50 17 13 10 325 60 16 5 15 72 195 100 16 26 20 78 250 12 5 65 50 39 500 10 5 131 00 19 1000 8 262 00 Min value of FILtEr is 19 Limit of A D This value is Factory Set to 1953 and should not be changed without consulting the factory Display update frequency is set by the A D update rate set in FILtEr amp dISPAU which sets the number of A D readings to be averaged before display and communications ports are updated 12 Mantracourt Electronics Limited SMW HR User Manual Calibration Switch on the SMW HR and allow it to stabilise for 30 minutes to obtain the best performance It is important that the gain set by t sens amp LK1 is correct for the strain gauge sensitivity before proceeding with the calibration Apply a test weight of about 5 of required operating range to the strain gauges Enter the menu using the password from page 3 5 scroll to CALL Enter programming mode and set CALL value to that of the applie
13. for the Printer if CP 0 127 See the printer section Log Number A range of numbers 0 to 19 999 is available Any sequential number logging activity can be preset as desired between these numbers The number will reset to zero after 19 999 The log number is not saved on power fail and resets to zero on power up 999999 000000 000001 to 000255 000000 to 000250 000000 to 000002 000019 to 002000 000000 to 000130 000000 to 000254 000000 to 000254 Mantracourt Electronics Limited SMW HR User Manual Chapter 4 Strain Gauge Input to the SMW HR The Strain Gauge Input The SMW HR offers a direct connection to most low level foil strain gauge sensors A 10 volt excitation is provided and it is monitored to compensate for any variation due to supply drift Load regulation or voltage drop in the cable between the sensor and the SMW HR The maximum supply current is 150mA which allows for the connection of upto 6 x 350 R Strain gauges The SMW HR s A D provides 19 bits of resolution 1 in 500 000 The Gain of which can be selected by means of a gain link on the input board LK1 amp by the t SEnS mnemonic Below is a table showing the relationship between the Gain link amp the t SEnS mnemonic MV V INPUT GAIN LINK LK1 t SEnS SETTING 1 25mV V Fitted 2 2 5mV V Fitted 1 5mV V Fitted 0 7 5mV V Not Fitted 2 15mV V Not Fitted 1 30mV V Not Fitted 0 Default setting is gain link fitted with t
14. made Response Defines what sort of response is expected If a appears here then data is expected to follow If a 2 is received then the host is expecting data back from the instrument If nothing is received then the command is expected to be an action type i e Tare relay reset In all cases the instrument will respond with data see Instrument response except when the address is 999 which is a general broadcast address Data This field can include any printable ASCII characters accept A maximum string length of 40 characters will apply to this field The field will be decoded by a command specific routine in the instrument This open approach allows good flexibility for the data into the instrument which could include modem strings Pass words etc etc End of frame A CR must always transmitted to indicate end of frame amp it will be from this point that the data will be decoded from the instruments receive buffer amp acted upon There are 3 basic command types command read which are used to read data from an instrument command write which writes data into the instruments amp action commands which perform an instrument function such as tare or EEPROM disable The following are examples of the 3 types Command Read Framing Address Separator Command Response Data Character d 001 disp Command Write Framing Address Separator Command Response Data End of Character d frame 9 1 REOL
15. value using the mnemonic LAbel A large range of labels are available to the user See table below LAbel Value Label LAbel Value Label 1 mV V 2 kN 3 N 4 MN 5 kgf 6 gf 7 daN 8 lbf 9 tonf 10 UStonf 11 ozf 12 g 13 t 14 kg 15 bar 16 mbar The time and date are set in the TDP printer itself using its own menu The printer allows the entry of an additional custom text message Three connections are required between the SMW HR communications port and the printer with a maximum cable length of 100 metres Additional Mnemonics for the Printer Operation this mnemonic the printer type and print format number is selected This number being appropriate to the type of printer used Details are advised with each type of printer selected Present types available are For the ITT IPP 144 40E printer the following numbers apply 0 Prints a sequential los number with the current display and unit of measure e g 00014 0011 3 tonne 1 Prints date and time with a sequential log number current display and unit of measure e g 00015 0001 7 tonne 22 05 07 05 06 2 Prints a sequential los number current display unit of measure with customer text message No 1 e g MANTRACOURT ELECTRONICS SMW HR PRINTER 00012 000 2 tonne 3 Prints date and time with a sequential log number current display unit of measure and a customer text message No 1 e g MANTRACOURT ELECTRONICS SMW HR PRINTER 00013 0023 6 tonne
16. 999999 999999 000000 000000 to 000250 000000 to 0001300 000000 to 000254 000000 to 000254 Mantracourt Electronics Limited SMW HR User Manual Code trAn PASS CALL CALH AdCALL AdCALH InPUtA dISP A InPUtb dISP b InPUtC C InPUtd dISP d dP Value Transducer Number Security Password Calibration Low value for mV V display Must be less than CALH See calibration section Calibration High value for mV V display When CALH is set to zero the SMW HR will display the raw A D value of between 0 amp 524287 See calibration section A D Calibration low value for CALL Must be lower input mV than CALH A D value See calibration section A D Calibration high value for CALH See calibration section Cal point 1 display value before Lin conversion See calibration section Cal point 1 required display value after Lin conversion See calibration section Cal point 2 value for Lin conversion See calibration section Cal point 2 Display value for Lin conversion See calibration section Cal point 3 value for Lin conversion See calibration section Cal point 3 Display value for Lin conversion See calibration section Cal point 4 value for Lin conversion See calibration section Cal point 4 Display value for Lin conversion See calibration section Decimal Point position for currently selected Transducer The following shows the position of the decimal point Code
17. DO AUTOTARE 40103 DO LATCH RELAY RESET 40105 DO PEAK HOLD RESET 40107 RESET TARE VALUE TO ZERO 40109 SET DISPLAY TO GROSS 40111 SET DISPLAY TO NET 40113 DISABLE EEPROM 40115 ENABLE EEPROM amp READ DATA FROM IT INTO RAM 40117 ENABLE EEPROM amp WRITE DATA IN RAM TO IT 40119 DISABLE KEYPAD 40121 ENABLE KEYPAD 40123 RECONFIGURE A D AFTER WRITE TO GAIN OR FILTER Examples 24 Mantracourt Electronics Limited SMW HR User Manual The following are examples of the commands Channel 1 has been used for examples Read NET value from Channel 1 Data sent from PLC 01 03 9C 43 00 02 1B 8F Data sent from SMW HR 01 03 9C 43 00 02 MSB NMSB NLSB LSB CRC 16 HI CRC 16 LO Auto Tare Channel 1 Data sent from PLC 01 10 9C 5 00 02 04 xx xx xx xx CRC 16 HI 16 LO Where xx Don t care Data sent from SMW HR 01 10 9C A5 00 02 CRC 16 HI CRC 16 LO Set Setpoint 1 on Channel 1 Data sent from PLC 01 10 9C 4D 00 02 D1 D2 D3 D4 CRC 16 HI CRC 16 LO Where D1 data MSB D2 data NMSB D3 data NLSB D4 data LSB Data sent from SMW HR 01 10 9C 4D 00 02 CRC 16 HI CRC 16 LO A note about EEPROM All user set parameters are stored in EEPROM where they are recalled on power up The EEPROM has a limited number of write cycles of between 10 000 amp 1 000 000 If setpoint data is to be written to the SMW HR we suggest disabling the EEPROM from the comms using register 40113 This register is written to with no data as
18. Position 000000 999999 000001 9 99999 000002 99 9999 000003 999 999 000004 9999 99 000005 99999 9 Function 000000 to 000012 009999 999999 999999 0 524287 0 524287 999999 999999 999999 999999 999999 999999 999999 999999 000000 to 000005 10 Mantracourt Electronics Limited SMW HR User Manual A tArE SCStdY dISP AU rESOL t SEnS FILtEr CP SdSt LAbEL Log no Auto Tare value Not applicable will default to Number of A D readings taken before the display is updated This in conjunction with FILTER sets the display update rate Display resolution of last digit This function is performed on the display data only and does not affect the comms or printer Keypad setting of Gain Used in conjunction with link LK1 on input module to provide the following gains in mV V 1 25 2 5 5 7 5 15 amp 30 Note t SEnS must be set before Auto calibration takes place See calibration section for more detail Sets the A D sample frequency and notch Filter This is factory set to 1953 and should not be adjusted See calibration section Comms Protocol Selects printer or FAST format CP 0 127 sets Printer CP 128 sets FAST communications protocol See comms and printer section of manual for further details Sets Serial Device Station Number if CP 128 This sets a unique address code for each SMW HR See comms section Sets label
19. User Manual Chapter 6 Relay Output Module General Description The Relay output module provides output control signals which can be used for switching functions such as ON OFF control and alarm indications The relays are activated by the values programmed for the Set Points The output configuration will be for open or closed relay contacts and latching Output Function 2 Relays SPCO on SP1 and SP2 The connections for which are shown in Chapter 2 Module Functions The SMW HR can be programmed so that the relay output module reacts to all or any of the following functions e Set points e n Flight compensation e Hysteresis e Relay inversion e Latching Set Points SP Set points are used to produce output signals at any required value so that the operation of the monitored net value can be maintained to preset levels Any excursion beyond set points will activate the relay or relays to provide alarm or initiate control as required Two set points SP1 and SP2 can be programmed to suit different applications The actions of either or both set points can inverted if required For normal operation the set point output is active until the input reaches the set point level In this condition when the input value is less than the set point the SP indicator is on and the output relay is energized producing a closed circuit on a normally open contact When the set point value is reached the SP indicator is off and the relay is de energ
20. anual The Communications Port Data Operation All SMW HR display data can be retrieved via communications port along with relay and EEPROM status All SMW HR user configurable data can be changed including EEPROM enable display and relay reset SMW HR Station Number cannot be changed The SMW HR communications port provides for a 2 way data link An intelligent host e g Personal Computer Main Frame or PLC is able to acquire the SMW HR s displayed value and read or modify the user configurable parameters using any of the following a RS232 485 for a one to one communication as in the case of a printer PC or PLC b RS485 for the connection of up to 25 SMW HR units on a single RS485 line C 20mA Current Loop for up to 250 SMW HR units on a single RS232 485 line via the IF25 interface With high noise immunity and isolation over distances up to 1Km Protocols available are ASCII and MANTRABUS selectable by the CP mnemonic on the display of the SMW HR programmer Data Retention and Protection Retention 10 years for set values minimum of 10 000 write cycles but typically 1 000 000 Protection of data and Watchdog timer giving repeat auto resets Impending power fail function s detection and shutdown Low power detection and hold off Environmental Storage temperature 20 to 70 C Operating temperature 10 to 50 C Relative humidity 95 max non condensing Case sealing To IP65 CE Approvals European EMC Dire
21. arisation cU Rede Duce de eU epe duane 13 Chapter 5 Analogue Outp ts eg Aa SESSIE E E eds SA NS seeded Cea Tee RR NE EE EUR EA S 15 Qutp ut Scalitig exea TR TR Se aed Sate a Sas gee PRE aS ob Be ERE Ren Ree E e S VERO oae NEU UE PR Tent 15 Method of Calculating OP LO and OP Hi from any known output 15 Calibration P 16 Chapter 6 Relay Output Module ee rhet esses ees SE sese eee see esee rone 17 Module FUNCTIONS 17 Set Points SP ers ioir epoi si GEEA 17 In Flight Compensation pe Eee ene rre Le Pe Ea 17 Hysteresis tore 18 O tput ACTION ACTION 18 Latching Qutputs EAtCH Imber 18 Figure 6 MS I fell 18 Chapter 7 The Commu nications POort sas edidere Ses vc e rese rae evo dele Gas eek ve e Yes Sis e 19 Introduction eror
22. ation display value A 4 point linearisation input value B 4 point linearisation display value B 4 point linearisation input value C 4 point linearisation display value C 4 point linearisation input value D 4 point linearisation display value D decimal point position Auto Tare value Scale steady value which must be held for 2 seconds Unit will not Auto tare til scale steady Can be disabled with value of 0 Display averaging Display resolution A D gain A D filtering Comms protocol Read only Serial device station number or Label for printer Read only Incremental log number for printer reset to 0 on power up Action commands DOTARE RESREL RESPH RESTAR SETGRS SETNET DISE2R ENE2RR ENE2RW DISKEY ENKEY SETAD HELLO Perform Auto Tare Reset Latch relays Reset Peak hold Reset Tare value to zero Set display to Gross value Set display to Net value Disable E2rom Enable E2rom amp read from it Enable E2rom amp write RAM to it Disable Keys Enable keys Reset A D using filter amp t sens values Used to determine if device present Returns CR 28 Mantracourt Electronics Limited SMW HR User Manual SMW RR Printer Interface CP must be set between 0 127 Dependant on printer type Printer selection enables the SMW HR to print its current display value to a printer via its communications port This display value can either be assigned a date and time stamp A label can be suffixed to the printed display
23. ce rna ena ed deua bees Page tea Exi uses erronea 29 Additional Mnemonics for the Printer enhn ehe enhn he ete ehe tenere 29 Chapter 8 Trouble Shooting heh 33 Chapter 9 SMW HR ters sessi sees esterne 34 The Communications Port Data reiger eI enu opere belated ide dete e De E ore ed v PE ORA E Hose ERG 35 Berat 36 Optional Mod les 5 6 nero teats cu EP EE een 36 SMW EIR ACCeSSOFIGS c 01S 12i IRR uto ae e dert oo dea ve Fe oorr wie ele pepe totes tetto iride de ere ER Rees 36 Instrument Setup Record Sheet sense ressent etes seen 37 WARRANT 38 Mantracourt Electronics Limited SMW HR User Manual 1 Chapter 1 Introduction to SMW HR The Surface Mount Intelligent Strain Gauge Amplifier SMW HR with an 6 digit 12 7mm LCD display is a compact microprocessor based unit specifically designed to monitor and control weighing applications Its flexibility of design allows for the connection of most strain gauges pressure or strain gauges over a wide range of sensitivity s Housed in a lig
24. ction When Hysteresis is applied to set points with normal output action the input is allowed to rise to the set point value and the output is then turned off The output is held off until the input value has dropped to the set point minus the Hysteresis value For inverted action the input drops to the set point and the output goes off and comes on again when the input rises to the set point plus the Hysteresis value Output Action Action The Output Action facility allows the user to determine whether set points produce normal or inverted output operation The Output Action ACTION is entered by a code to suit the requirements of the user 11 Output Action options are available The value of the ACTION to be entered in the algebraic sum of the following components Bit value 1 invert SETPT1 Bit value 2 invert SETPT2 Bit value 4 invert an op Bit value 8 Disp gross Bit value 16 Setpoint gross Bit value 32 An op gross Bit value 64 Printer gross Bit value 128 Disp Peak Bit value 256 Setpoint Peak Bit value 512 An op Peak Bit value 1024 Printer Peak Peak can be either Gross or Net value by selecting bit value 8 or not Example peakhold of gross value on display amp An op 8 128 512 Peakhold can be reset from LR contact Latching Outputs LAtCH The latching facility allows the relay module output to be held until reset either by keypad external remote or via the communications port Latching is applied t
25. ctive 2004 108 EC BS EN 61326 1 2006 BS EN 61326 2 3 2006 Low Voltage Directive 2006 95 EC BS EN 61010 1 2001 Rated for Basic Insulation Normal Condition Pollution Degree 2 Permanently Connected Insulation Category lll Physical Case dimensions 200 x 120 x 75mm Case materials Light grey ABS Weight 725g Terminals 2 5mm saddle field terminals Accessibility Power Supplies All electronics accessible through front panel 210 260v AC 50 60Hz 10W 97 120v AC 50 60Hz 10W 9 32v DC 50 60Hz 10W Mantracourt Electronics Limited SMW HR User Manual 35 SMW HR Order Codes Input Standard strain 10v DC 160mA gauge Outputs Output Range SMW HR Standard Analogue voltage Ov to 10v DC current 4 to 20mA Optional Modules Communications Port Current Loop LC1 Multi Drop LC3 RS232 485 Output Control Alarm Output Function Relay 2 Relays SPCO on SP1 and 2 LR1 Power Supplies 220 240v AC 50 60Hz 10W LS1 110 120v AC 50 60Hz 10W 9 32v DC 50 60Hz 10W LS3 Programming unit Remote Hand Held LP3 Example UAB EX UAHRLC for mounting choice please refer to the price list options SMW HR LR1 LC3 LS1 Standard SMW HR with relay module and RS232 485 Communications 110 240 volts AC power supply SMW HR Accessories The following accessories are available to allow for expansion of systems Function Order code IF25 Interface Connect up to 25 SMW HRs IF25 NOTE Details of the
26. d weight For calibration to be successful program mode must be entered even if CALL has the required value already set Use the scroll key to move onto CALH Apply a test weight of about 80 of required operating range to the Strain gauges Enter programming mode and set CALH value for the applied weight Again program mode must be entered even if CALH has the required value already set For calibration to be successful the CALL calibration weight must be less than the CALH weight Press the key the calibration constants will now be stored into EEPROM the display will revert to the live input value which should be that of CALH The values for ADCALL and ADCALH are automatically inserted once the auto calibration routine is completed These values should NOT be altered It is advisable however to record the values for CALL CALH ADCALL amp ADCALH as should these values be lost through operator error they can be re entered from the keypad without the need of repeating the above procedure 4 Point Linearisation Any non linearity of the system may be reduced by using a 4 point linearisation routine The 4 points being entered under mnemonics InPUt A to dISP d System non linearity can be determined by plotting a graph of weights applied against display value 3 straight lines can be applied to this curve the end of each line providing one of the 4 linearisation point
27. e if it is a warranty repair The sender is responsible for shipping charges freight insurance and proper packaging to prevent breakage in transit Mantracourt warranty does not apply to defects resulting from action of the buyer such as mishandling improper interfacing operation outside of design limits improper repair or unauthorised modification No other warranties are expressed or implied Mantracourt specifically disclaims any implied warranties of merchantability or fitness for a specific purpose The remedies outlined above are the buyer s only remedies Mantracourt will not be liable for direct indirect special incidental or consequential damages whether based on the contract tort or other legal theory Any corrective maintenance required after the warranty period should be performed by Mantracourt approved personnel only THE QUEEN S AWARDS FOR ENTERPRISE 2000 ISO 9001 REGISTERED FIRM C In the interests of continued product development Mantracourt Electronics Limited reserves the right to alter product specifications without prior notice Code No 517 062 Issue 2 3 16 04 13 38 Mantracourt Electronics Limited SMW HR User Manual
28. ed by the checksum The data transmitted from the SWM HR is always sent as complete bytes The station number precedes the data and the checksum follows the data The data format used is signed 15 Bit The most significant Bit of the most significant Byte is set for negative numbers Operation There are two modes of operation namely data requests by the host controller and data changes Data requests from the SWM HR consist of either a complete dump of the data variables stores in RAM or the display reading Data changes consist of writing new data to SWM HR variables thus changing parameters such as Set Points in flights etc An acknowledgement message is returned to the SWM HR to indicate that the new data has been acted upon Updating The required mode or variable to be updated is determined by the station number followed by the command byte An EXOR checksum consisting of the station number command byte and any following data must be appended to the received data It is most important that the byte proceeding the checksum must have its most significant bit set to signify the end of data The SWM HR works out its own checksum and if it disagrees with the received one a Not Acknowledge NAK message is returned Mantracourt Electronics Limited SMW HR User Manual 19 Communications Commands The following is a list of commands available for reading to or writing from the SWM HR Command No Description 1 Data dump including Gro
29. every display update until an XOFF or framing character is received The display value can be selected under the Action mnemonic This MUST only be used ina 1 to 1 system Response timing From receipt of the host s terminating lt CR gt to a response from the instrument is expected to be within 50mS Continuous output stream By sending an the instrument will transmit it s display value every display update until an XOFF or framing character is received The display value can be selected under the Action mnemonic This MUST only be used ina 1 to 1 system Mantracourt Electronics Limited SMW HR User Manual 27 List of commands GROSS NET STATUS TRAN PASS SETPT1 IN FT1 SETPT2 IN FT2 HYST LATCH ACTION OPLOW OP HIGH CALL CALH ADCALL ADCALH INPUTA DISP A INPUTB DISP B INPUTC DISP C INPUTD DISP D DP A TARE SCSTDY DISPAV RESOL T SENS FILTER CP SDST LOGNUM Current gross value Read only Current net value Read only Current Status flag read only Transducer selected Power on default 0 Read only Setpoint 1 In flight 1 Setpoint 2 In flight 2 Hysteresis for setpoint 1 amp 2 Latch for setpoint 1 amp 2 Output action Output Low for An op scaling Output high for An op scaling Calibration low point Calibration high point A D value for low calibration point A D value for high calibration point 4 point linearisation input value A 4 point linearis
30. g Storage Temperature 20 C to 70 C Two power supply options are available Units can operate from the following 220 240V AC 50 60Hz 10W LS1 110 240 110V AC 50 60Hz 10W 9 30V DC 10W LS3 Running current 300 530mA Dependent upon module configuration start up current 3Amps for 20mS Conditions Watts Power in 12 24V I SMW and LP1 with 1 x 350R strain gauge connected and a 4 20mA 2 24 2 88 analogue output providing 20mA into a short circuit Il With relay module fitted add 0 58W 0 65W Ill With RS232 module fitted no device connected add 0 07W 0 09W IV For each additional 350R strain gauge add 0 38W 0 48W Note Maximum number of strain gauges 6 x 350R or equivalent Terminal Connections Connection between the SMW HR unit and input output signals including power supplies are made via 2 5mm field terminal blocks inside the unit Access to the terminals is made through glands in the bottom of the case See Figure 2 1 Mantracourt Electronics Limited SMW HR User Manual 5 Figure 2 1 The SMW HR Field Connection Terminals FIELD TERMINAL CONNECTORS PROGRAMMER O PT Printer OUTPUT 1 g 234 LR Latch Relay Peak CONTACT RELAY SENSITIVITY SELECTOR o AT Auto Tare INPUTS j MODULE mV ON ON 05 23678 20 45 OUTPUT 2 2 08 278 25 46 SC Screen 10 34 35 56
31. grammer Unit Panel Layout Table 3 1 Control Panel Guide 9 When in programming mode it should be noted that flashing cursor at the bottom of the selected digit indicates programming mode Used to scroll through and change the set up data by displaying mnemonics for each configurable parameter followed by the appropriate data gt Selects the display digit required Selection value is indicated by a flashing digit and flashing program cursor Increments each selected display digit 0 9 Pressing the a key under programming conditions will display the leading digit as either minus or a blank digit for positive values gt RJ Resets the display to the input variable and enters new data in the SMW HR memory If during the programming sequence selection is not completed the display will revert to the input variable after 2 minutes If scale steady then Tare and puts display into Net Mode Not Applicable Print Function Peak Hold Reset SP1 Setpoints FN1 amp These are reserved as special function LED s FN2 Mantracourt Electronics Limited SMW HR User Manual Figure 3 2 Display Module Connections and Switch Settings y REAR VIEW OFF 000000 65432 POSITION ON FUNCTION FACTORY SETTINGS 1 Enables Keys gt and a 2 Enables all Program Keys 9 gt 4 amp R Enables and Function Keys Enables and Function Keys Not Applicable Not Applicable OO KR w
32. ht grey ABS case it is sealed to IP65 standard to meet most environmental conditions or as a DIN Rail Mounting module with a separate stainless steel panel mounting display and keypad The unit offers the following facilities A simple auto calibration of the highest and lowest weights required an easy auto tare setting and peak hold facility A password facility gives protection to setup parameters DC analogue outputs of 4 20mA and 0 10V are standard with full scaling over any desired range and the ability to invert these outputs if required Two passwords user and calibrator 4 point linearisations with multiple strain gauge calibrations stored if required Gain sensitivity is selectable via Link amp Keypad between 1 25 and 30mV V Several plug in options are available An optional relay output module provides for 2 set points and hysteresis can be applied to both set points together with In Flight compensation Relays can be inverted and latched All these facilities being set digitally in real engineering terms Both relay and analogue outputs have a high level of isolation Optional communications modules provide for 20mA noise immune current loop RS232 or RS485 connections to a PC PLC or main frame This allows for the input variable to be viewed and any setup parameters changed Multiple 20mA SMW HRs can be connected via an IF25 current loop to RS232 interface which when included allows for an expansion of up to 250 SMW HRs
33. ithin 2 of the 4 to 20mA output Ooutput Range DC Voltage OV to 10V DC Current 4 to 20mA Notes 1 Maximum current load on voltage modules is 2mA 2 Maximum drive voltage available in current modules is 20V Output Scaling Output scaling factors are set by the user and determine the display range over which the analogue module operates OP LO Output Low This sets the displayed value at the module s minimum output OP HI Output High This sets the displayed value at maximum output If the display is outside the range defined by OP LO and OP Hi the analogue output will remain constant at its minimum or maximum output value Inversion of the analogue output can be set by the output action mnemonic OA See Relay Output Module Chapter 6 Example Assume a 4 20mA output module is required to provide an output of 4mA for 1000Kg and 20mA for 6500Kg Set OP LO to 1000 and OP Hi to 6500 It will be necessary to determine OP LO and OP Hi by graphical or mathematical means if the known display values do not coincide with the minimum and or maximum analogue output Figure 5 1 Analogue Output Max 19999 OP 6500 Output scaled over the complete display range ie OP HI 19999 OP LO 19999 Sy OP LO 1000 Output scaled over the complete display range ie Display 0 OP HI 6500 OP LO 1000 Min 19999 Analogue Output Min 4mA Max 20mA Method of Calculating OP LO and OP Hi from any known output value
34. ized producing an open circuit output For an inverted operation the reverse conditions apply Normal and inverted action is determined by the direction of the input value as it changes For example In alarm applications A High High operation allows for a rising net value to operate on two set points to define an acceptable quantity weight or band of operation A Low Low operation operates on a falling value A High Low operation will operate on a rising or falling value setting a band by one set point operating normally and the other being an inverted action allowing the In Flight amount to make up the required total set by SP1 A similar situation exists for SP2 In Flight Compensation The setting of an In Flight value causes the set points to automatically adjust to control the flow of the material being weighed For example if SETPT1 is used to control a flow a certain amount will be In Flight between the supply point and receiving point causing a positive error when the required weight is reached The In Flight compensation value is adjusted by the user to reduce SETPT1 to prematurely stop the flow allowing the In Flight amount to make up the required total set by SETPT1 A similar situation exists for SETPT2 Mantracourt Electronics Limited SMW HR User Manual 17 Hysteresis HYS Once a Hysteresis value has been set it will be applied to both set points entered It is effective for both normal and inverted a
35. minals Remote function Auto Tare Peak Hold Latched printer fails to operate a Check DP r for correct value to ensure desired function selected 3 MANTRABUS ASCII Format No Communications a Check that a comms module is fitted b Check correct CP code is entered for required protocol C Check connections to SMW from IF25 are correct d Check IF25 green LEDs are on and RX LED is on and TX LED is off Press TX TEST TX LED should light e Check RS232 connections from the host to the IF25 are correct f Check SdSt serial device station number is correct g Check Baud rate settings on SMW s are correct for the host h Check host comms port is set to 8 bit word 1 start bit 1 stop bit no parity i Check correct protocol is being observed by the host j Check if using ASCII a null character is being sent by most for each Byte expected back Mantracourt Electronics Limited SMW HR User Manual 33 Chapter 9 SMW HR Specifications Strain Gauge Input Calibration Initial Calibration SI Units Linearisation Auto Tare Input Sensitivity Range Zero Temperature Coefficient Span Temperature Coefficient Excitation Compensation Repeatability Display Update Rate Display Average Display Resolution DC Analogue Outputs Range MIN MAX 4 20 0 10V Isolation Automatic digital by use of keypad and 1 or 2 known weights giving 0 0015 linearity Linear mV V input using auto cal giving 0
36. nd 2 Checksum of 1 and add 80 hex all bytes except frame to this byte as it is the last before as the checksum talk CHR amp HFF CHR amp H1 CHR amp H82 CHR amp H1 XOR amp H82 print the string to the port PRINT 1 talkS must add semicolon after string to stop transmitting a carriage return wait for a while this depends on how many bytes you are expecting and the baud rate input all the bytes in the serial buffer input from smw hr INPUT LOC 1 1 Mantracourt Electronics Limited SMW HR User Manual 23 Register Allocation Register shall be allocated the following values Odd values are used as a register is only 16 bits amp data will be read as 32 bits For action commands data is ignored but again 2 registers must be written to See examples 40001 GROSS DISPLAY VALUE 40003 NET DISPLAY VALUE 40005 STATUS BYTE INCLUDES SETPOINT STATUS EEPROM More Detail To Follow DUMMY for continuity only 40007 CHAN 40009 PASS 40011 SETPT1 40013 IN FT1 40015 SETPT2 40017 IIN FT2 40019 HYST 40021 LATCH 40023 ACTION 40025 OP LO 40027 OP HI 40029 ACALL 40031 ACALH 40033 ADCALL 40035 ADCALH 40037 DTP1I 40039 DTP1D 40041 DTP2I 40043 DTP2D 40045 DTP3I 40047 DTP3D 40049 DTP4I 40051 DTP4D 40053 DPSEL 40055 DISZER 40057 SCALES 40059 AVRGE 40061 RESOL 40063 GAIN 40065 FILTER 40067 CP 40069 SDST 40071 LOGNUM LOG NUMBER printer only 40073 Action commands 40101
37. nd the following Data OFFH O2FH 081H OAEH Note MS Bit Set Response to Command 1 Bytes 1 SDST 2 5 Gross Value 6 9 Net Value 10 Status Flag 11 14 tRAN CHANNEL 15 18 PASS 19 22 SETPT1 23 26 IN FT1 27 30 SETPT2 31 34 IN FT2 35 38 HYST 39 42 LATCH 43 46 ACTION 47 50 OP LO 51 54 OP HI 55 58 CALL 59 62 CALH 63 66 ADCALL 67 70 ADCALH 71 74 INPUTA 75 78 DISP A 79 82 INPUT B 83 86 DISP B 87 90 INPUT C 91 94 DISP C 95 98 INPUT D 99 102 DISP D 103 106 Dp 107 110 A TARE 111 114 SCSTDY 115 118 DISPAV 119 122 RESOL 123 126 TSENS 127 130 FILTER 131 134 CP 135 138 SDST 139 142 LOG NUMBER 143 EEPROM STATUS 144 EX OR CHEKSUM Mantracourt Electronics Limited SMW HR User Manual 21 COMMAND 2 REQUEST DISPLAY DATA DATA transmitted to SMW HR for Command 2 OFFH Station number 082H Chksum Where Chksum Station number EXOR with 082H Example To obtain the display reading of an SMW HR whose station number is 47 send the following Data OFFH 02FH 082H OADH Note MS Bit Set Response to Command 2 Bytes 1 SDST 2 5 GROSS VALUE 6 9 NET VALUE 10 STATUS FLAG 11 DECIMAL POSITION 12 EX OR CHECKSUM STATUS FLAG Bit Flag 0 RELAY 1 ON 1 RELAY 2 ON 2 NOT USED 3 NOT USED 4 NOT USED 5 NOT USED 6 SCALE STEADY 7 GROSS NET DISPLAY SELECTED COMMANDS 4 TO 34 Write data to SMW HR Parameter Commands 4 to 34 all have the same format Format for data transmitted to SMW HR for Commands
38. ng RS485 the last device should be terminated with 120R Rx Rx Fit LK2 in last device CO 4 Ix Ix RS232 485 Converter NOT SUPPLIED Figure 7 5 LC3 RS232 Mode Connection to PC Note LK1 must be made for RS232 operation Mantracourt Electronics Limited SMW HR User Manual 31 Figure 7 6 LC3 RS232 Mode Connection to Printer Note 1 LK1 must be made for RS232 operation Note 2 If no RTS is available from the printer fit LK2 Signal ITT lpp 144 Amplicon 40E 2 NOTE When using an RS232 to RS485 converter which has a non biased receiver the following actions are recommended To bias the device 1 Terminate the receiver with 140R in place of the usual 120R 2 Fit a 1 5K from the receive negative to the receiver 5V supply or a 3K3 to the 12V supply 3 Fit a 1 5K from the receive positive to the receiver supply Ground 32 Mantracourt Electronics Limited SMW HR User Manual Chapter 8 Trouble Shooting Guide This chapter is designed to assist in the identification of problems relating to the installation and setting up of the SMW HR 1 General Connection and setup parameters No display on power up a Check supply is present at the SMW HR terminals b If supply is correct contact Mantracourt Display shows 1 or 1 continually without a weight applied to the strain gauge a Check input connections to the SMW HR from the st
39. o the off status of the relay SETPT1 or SETPT2 SETPT1 SETPT2 Code Unlatched Unlatched 0 Latched Unlatched 1 Unlatched Latched 2 Latched Latched 3 Figure 6 1 LR1 Module C NC lo RLI ISPI ek Relay p Status C o RL2 ry LEDs NC o To meet the Specified EMC Fast transient requirements it is important that the ferrite ring supplied is fitted as per the following instructions Illustration showing ferrite ring FEC 323 4940 fitted to the LR1 relay wiring Two turns of the wiring are passed through the ring positioned 12cm from the LR1 end of the cable to improve immunity to electrical fast transients and bursts 18 Mantracourt Electronics Limited SMW HR User Manual Chapter 7 The Communications Port Introduction The SWM HR communications port provides for a 2 way data link An intelligent host e g Personal Computer Main Frame or PLC is able to acquire the SWM HR s displayed value and read or modify the user configurable parameters using any of the following a RS232 485 for a one to one communication as in the case of a printer PC or PLC b RS485 for the connection of up to 25 SWM HR units on a single RS485 line C 20mA Current Loop for up to 250 SWM HR units on a single RS232 485 line via the IF25 interface With high noise immunity and isolation over distances up to 1Km 3 communication fo
40. rain gauge b If connecting a 4 wire device ensure terminals 1 amp 2 and 5 amp 6 are linked C Check strain gauge output between input terminals 3 amp 4 of the SMW d Check that the CALH weight is applied and is not the same or lower than CALL Display over ranges 1 or 1 when or before the maximum required weight is applied to the strain gauge a Check output of strain gauge is set to the correct sensitivity settings on the DIL switches Display very noisy a If using a 4 wire device ensure terminals 1 amp 2 amp 5 amp 6 are linked b Check output voltage of strain gauge Display operating in wrong direction a Check connections to input terminals 3 amp 4 are correct way round b Check the type of strain gauge compression or tension Unit will not auto calibrate a Check that CALH is not zero and its weight is greater than CALL b Check that input is not overranged on CALH weight Unit will not Auto Tare a Check DP r code for correct setting b Check auto tare sequence when selected from keypad is completed within 1 second Access to parameters not possible beyond the PASSWORD PASS a Check for special password if not 1111 with your company or supplier Quote serial number as a reference 2 Relay Output Module Incorrect Relay Operation a Check set point in flight and hysteresis values are correct b Check latching and invertion settings in output action OA are correct C Check connections to output ter
41. rmats MANTRABUS ASCII and PRINTER are selected from the mnemonic CP via the keypad of the programmer Integrity is ensured by pre programmed default parameters should a loss of communications with the host occur Serial Communication Protocol General Incoming data is continually monitored by the SWM HR on its serial input line Each byte of data is formatted as an eight bit word without parity preceded by one start bit and followed by one stop bit Transmission and reception of data up to 19 2K Baud is possible the actual rate being selected by an 6 way link on the communications module The Baud rate depends upon the communications hardware specification distance and cable type See Comms for Baud Link settings Chapter 7 MANTRABUS Format selected when CP is 128 To signify commencement of a new block of data the HEX number FFH is used as a frame character followed by the station number of the unit under interrogation This is entered via the SWM HR keypad under mnemonic SDSt and ranges from 0 254 The SWM HR acts upon incoming data only if its own station number immediately follows the FFH character New data must be received as a string of four nibbles bits 7 4 set to zero which are assembled into two bytes and written into the variables store within the SWM HR The most significant nibble must be received first and the last nibble must have the most significant bit bit 7 set to indicate the end of data This is follow
42. s OP LO Low Display span Low output Min output Display High output Low output High Display Span Max output High output Display High output Low output Low output Known low output High output Known high output Min output Lowest measurable value of output module Mantracourt Electronics Limited SMW HR User Manual 15 Max output Highest measurable value of output module Display span Highest required display value minus lowest required display value Example Using 4 20mA output module where it is required to produce 6mA at a display value of 400 and 18mA at a display value of 1100 OPLO 400 700 6 4 400 1400 18 6 12 OPLO 400 116 66 OPLO 283 34 OPHi 1100 700 20 18 1100 700 x 2 18 6 12 1100 116 66 Hi 1216 66 Note 1 OP Hi must be greater than OP LO Note 2 If OP LO or OP Hi are greater than 19999 then divide both OP LO and OP Hi by 10 this will give less resolution Decimal point can be placed anywhere to suit reading Calibration Re calibration can be made by adjusting the gain and offset potentiometers or by adjusting the values of OP LO and OP Hi An offset can be achieved by increasing the values of both OP LO and OP Hi and the gain by increasing the range between OP LO and OP Hi Figure 5 2 Showing the Potentiometers for Gain and Offset Adjustment 16 Mantracourt Electronics Limited SMW HR
43. s These are entered as display value for non linearised InPUt against required dISP value Notes on 4 point linearisation See Figure 4 1 All 4 points must be entered A minimum value of 500 digits between each value must be observed The line is extended above point D in a straight line set by point C amp D The line is extended below point A in a straight line set by point A amp B If all 4 points are set to zero then no linearisation is applied WN Mantracourt Electronics Limited SMW HR User Manual 13 Figure 4 1 Internal Linearisation Protocol Required SMW Display Display Required 4000 T D Actual 3000 npu B 2200 2000 1009 Input A 990 22 Digits Load Applied A B D 1000 2000 3000 4000 Input Actual Display before Linearisation Display Required display for input value Input A 990 Disp A 1000 Input B 2200 Disp B 2000 Input C 3300 Disp C 3000 Input D 3900 Disp D 4000 14 Mantracourt Electronics Limited SMW HR User Manual Chapter 5 Analogue Outputs Two analogue outputs are available offering a DC current range and a DC voltage range They are fully scalable optically isolated and generated from the value as selected under Action mnemonic The 4 to 20 mA output is precalibrated to an accuracy of within 0 15 of the range The 0 10V output is accurate to w
44. ss amp Net values 2 Returns Gross amp Net values 3 Spare 4 Write to channel number sets current transducer 5 Write to SETPT1 6 Write to IN FT1 7 Write to SETPT2 8 Write to IN FT2 9 Write to HYST 10 Write to LATCH 11 Write to ACTION 12 Write to OP LO 13 Write to OP Hi 14 Write to CALL 15 Write to CALH 16 Write to ADCALL 17 Write to ADCALH 18 Write to CAL1 19 Write to CALI d 20 Write to CAL2 21 Write to CAL2 d 22 Write to CAL3 I 23 Write to CAL3 d 24 Write to CAL4 25 Write to CAL4 d 26 Write to DP 27 Write to A TARE 28 Write to SCSTDY 29 Write to DISPAV 30 Write to RESOL 31 Write to TSENS 32 Write to FILTER 33 Write to CP 34 Write to SDST 100 Request AUTOTARE 101 Request RELAY RESET 102 Reset PEAK HOLD 103 Reset TARE VALUE TO ZERO 104 Set display to GROSS 105 Set display to NET 106 Disable EEPROM 107 Enable EEPROM amp READ TO IT 108 Enable EEPROM amp WRITE TO IT 109 Disable KEYPAD 110 Enable KEYPAD 111 Set A D Command 1Request for all data DATA TRANSMITTED TO SMW HR FOR COMMAND 1 OFFH Station Number 081H Chksum Where Chksum Station number EXOR with 081H Command 1 Request for all data DATA TRANSMITTED TO SMW HR FOR COMMAND 1 20 Mantracourt Electronics Limited SMW HR User Manual OFFH Station Number 081H Chksum Where Chksum Station number EXOR with 081H Example To obtain a complete dump of the variables in the SMW whose Station number is 47 se
45. the Auto tare command Disable EEPROM on Channel 1 Data sent from PLC 01 10 9C B1 00 02 04 xx xx xx xx CRC 16 HI CRC 16 LO Where xx Don t care Data sent from SMW HR 01 10 9C B1 00 02 CRC 16 HI CRC 16 LO Mantracourt Electronics Limited SMW HR User Manual 25 ASCII Protocol Host Transmission The command structure is based on the following format Framing Address Separator Command Response Data Character 001 CALH 99 9999 For example 001 SP1 123 456 lt CR gt An explanation of each field is as follows Framing character A single is used to frame up the receiving devices allowing all instruments to see the start of a new message The character will only be transmitted by the host for framing purposes Address The Address is always 3 ASCII characters representing the devices to which the command is intended Address 999 is reserved for Broadcast addressing for which there is no response Separator Must always be sent by host As no Checksum or message verification technique is used this separator character is a further check by the instrument on the incoming message Command Up to 6 alpha numeric characters can be used in this field The mnemonic approach has been used as this would be intended to be as the mnemonics will appear to the user from the 7 segment display thus saving the user remembering a command list Upper and lower case can be used within field as no discrimination is
46. unit appears in a separate publication Printers Time date and display data TDP Display data only DP 36 Mantracourt Electronics Limited SMW HR User Manual Instrument Setup Record Sheet Product Product Code Serial No Tag No Date Location Measurement type range amp engineering units Communication Baud Rate SMW HR Password No 001111 trAn PASS VALUE SEtPt1 In Ft1 SEtPt2 In Ft2 HYSt LAtCH ACtion OP LO OP Hi A tArE SCStdY rESOL CP SdSt or LAb Log no for printer Password No 009999 trAn PASS CALL CALH AdCALL AdCALH InPUtA dISP A InPUtb dISP b InPUtC dISPC InPUtd dISP d dP A tArE SCStdY dISP AU SCStdY dISP AU rESOL t SEnS FILtEr Mantracourt Electronics Limited SMW HR User Manual 37 CP SdSt LabEL Log no for Printer WARRANTY All SMW HR products from Mantracourt Electronics Ltd Mantracourt are warranted against defective material and workmanship for a period of 3 three years from the date of dispatch If the Mantracourt product you purchase appears to have a defect in material or workmanship or fails during normal use within the period please contact your Distributor who will assist you in resolving the problem If it is necessary to return the product to Mantracourt please include a note stating name company address phone number and a detailed description of the problem Also please indicat
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