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Strain Gage Bridge Amplifier GSV-2 - ME

1. ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 40 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de Subject to change without notice Every information discribes the product in general They are no assurence of features in the sense of 459 Abs 2 BGB and assume no liability Made in Germany Copyright 1999 2007
2. Get Digits determineds the number of the showen values Possible error codes 0xA0 0x54 Get Channel Operation number 65 Number of parameter 0 From the GSV sended bytes 1 Get Channel reads out the the setted analog input channel In the standadr version there are the bridge input channel 0 and the channel 1 which has an input voltage range from 0 to 10V We offer optionally the GSV 21 in a more channel version which hase 5 more input channel Possible error codes 0xA0 0x91 Get Last Error Operation number 66 Number of parameter 0 From the GSV sended bytes 1 With get last error the the error status of the last given command can be determined The following error codes are seted so far Default no command given or error code deleted 0x00 No Error OK no further changings of the setting activated OxA0 No Error OK but further changings of the setings activated OxA1 From this point former command were declined because Command number mot given 0x40 command No given but not implemented in this FW 0x41 Access denied not closer specifyed 0x70 Access denied because Blocking is seted 0x71 Access denied because password not or wrong given 0x72 Access denied because configuration jumper is not set 0x73 Access denied because number of orders too high 0x74 Access denied because this port stops Set Write 0x75 wrong parameter not closer specifyed 0x50 wrong parameter partly wrong bits 0x53 wrong
3. Get value releases the transmission of a measured value Because of the steady transmission of values this function is of special interest if the transmission was stoped by stop transmission or if the logger mode is active look at set mode The data format of the returned datas of the GSV correspondents to the datas which are steady transmitted binary or ASCII look at Set Get mode Possible error codes 0xA0 0x91 clear maximum value Operation number 60 Number of parameter 0 From the GSV sended bytes 0 Clear maximum value sets back the in maximum mode measured look at set mode maximum value so that a maximum value can be generated Possible error codes 0xA0 0x71 set Digits Operation number 61 Number of parameter 1 From the GSV sended bytes 0 Set Digits sets the number of the showen values on the LC Display If the ASCIl data output is seted by SetMode the number of the transmitted value bytes is seted as well The range of values of the number of values is in dezimal point settin untill 8 that means the number of values is not allowed to be smaller than the dezimal point setting look at Set Dpoint absolute Range of values 0x01 0x08 Possible error codes 0xA0 0x54 0x71 get Digits Operation number 62 Number of parameter 0 From the GSV sended bytes 1 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 26 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de it
4. get dpoint Operation number 28 Number of parameter 0 From the GSV sended bytes 1Get dpoint determineds the with set dpoint seted dezimal point Possible error codes 0xA0 0x91 switch Operation number 29 Number of parameter 1 From the GSV sended bytes 0 Switch switches the switch output corresponding to the parameter bytes on 1 or off 0 The position of the switch output stays just there if the measured value with turned off ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 20 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de Fl range comperation Fensterkomparator between switch threshold is With set threshold the thresholds can be set Thresholds at the measuring range end deaktivating the threshold switch Now you can use the switch output switch indipedent from the measured value Range of values 0x00 0x01 Possible error codes 0xA0 0x71 LL get serial number Operation number 31 Number of parameter 0 From the GSV sended bytes 8 Get serial number determine the serial number of the amplifier ASCII character string Possible error codes 0xA0 0x91 set threshold Operation number 32 Number of parameter 4 From the GSV sended bytes 0 Set threshold71 set the threshold of the amplifier The first two parameter equivalent to the higher bytes of the switch on threshold the next two equivalent to the switch off threshold At first they e
5. Fu LL Strain Gage Bridge Amplifier GSV 2 User s Manual Update 02 01 2007 HE Table of Contents Pin ONMBN CAG cach sea gee cereideceennal ee ceaecc econ EEEE saceeesttlencvteanacendecee bathe st ecereats 3 Backplate of the table case TSD isc sccecnssssienseeesaseisecieesaudenieenenecbuercedeeevastiessceb inertia Connection and StAP UD dsicisivcnccaeee etcecaicenenninatmieianciocontesinaenadseaniawsiiss 5 Selection of the input SENSItIVILY cceeeecceeeeeeeeeeeeeeeesssseeeeseeeeeeeeeeeeeeeeeeseseseeeseaeeenes 5 Zero point eal cosas cose veces ek cota cea ves ce eien eea aara iaaa EOE OES e aaan Eia EEE T 6 Useing of the switching OULDUL 2 cccce ceseseeceeseceectees ccneerennedenseneenesencececceeretienteeeeneneeeeenss T RS 232 422 Protocol of the GSV 2 Strain Gauge Bridge Amplifier GSV 2 00 8 Data OUI ace oa oreo E a E E eee 8 Display Settings sene e E E E E E 9 Outp t of the register data sessiossa a E E EREE 9 Commands to the GSV 2 sie aa e aaea meds Eaa aaeei DEE 9 Fable of command Sss a rT rt E E ervey ements terre 10 Description of command S asserire E a S E 12 General advices and ipS siiideadcrvasatcxsieeenezssendcserevedinasianteederaststentperecantenieesheaein easier 32 Technical DAU yc sioie ss ctaoxasnicdadideaabaxnawebididn ode Gud aaah anced dna atnceleeagneenatdelaanes 34 PSO MMO sca icse seeathe Nenad e aiaa ieia i e AE aa Ta E a a r ea aa a 36 Description of the jumpers
6. 0xC8 00 05 0xC1 75 30 Possible error codes 0xA0 0x53 0x54 0x55 0x57 0x58 0x80 0x71 ReadSamplingRate Operation number 139 Number of parameter 0 From the GSV sended bytes 3 With ReadSamplingRate the sampling rate ande the number of the average values can be checked by the way it is described under WriteSamplingRate Byte 1 Number of the average values in Bits lt 5 0 gt Bits 6 und 7 1 Byte 2 Highbyte of the Sampling Rate Register Byte 2 Lowbyte of the Sampling Rate Register Whereas the samplinrate Sampling Rate Registe 2 Possible error codes 0xA0 0x91 Set analogue filter Operation number 144 Number of parameter 2 From the GSV sended bytes 0 With Set analogue filter the limit frequency of the prefilter can be changed if the AutoFilt Flag of the Special Mode Registers 0 is read Set Get special Mode This low pass filter is in front of the AD converter and it is able to improve the signal to noise ratio as well as the digital and analog output The Standard version hast 3 limit frequencys 1 3 5Hz 1 order ab 260Hz 2 order 2 260Hz 1 order ab 1 7kKHz 2 order 3 1 7kHz 1 order The parameter 1 parameter Highbyte 2 parameter Lowbyte are showing twice the ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 31 Ful amount of the wished limit frequency the closest limit frequency lying to the param
7. Backplate of the table case TSD Connections on the back plate On Charge 234567 n Charge0 y Emm Output RS 232 A N Qpr XT O US 2 12 24 V UF 3 UD 5 US Bridge supply UD Bridge output US 7 UF Sensor lead e PC UD 4 RX TX GND The connections 2 to 7 of the back plate are reffering to the connections of the connection panel To connect theGSV 2TSD via a serial interface from a PC you need a RS232 with two plugs And you have to cross the connections RX and TX We recommend to connect the shilding of the interface wire of the RS232 or RS422 with the ground connection of the case GSV 2AS ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 4 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de Fil A straingage fullbridge or a load cell is getting connected to the amplifier as shown below LL Connection and start up 4 Wire technology 6 Wire technology Sensor supply Clip 2 Sensor supply Clip 2 Sensor supply Clip 7 Sensor supply __ Clip 7 Sensor signal Clip 4 Sensor signal Clip 4 Sensor signal Clip 5 Sensor signal Clip 5 Sense wire Clip 3 Sense wire Clip 6 The supply voltage should be connected with the clips 14 and 15 GND The analogue output transmits a signal which is proportional to the measured force We offer the GSV 2 with the following options 5 V 0 10 V or
8. 0 Start transmission starts the serial transmission of the values if they have been stoped with stop transmission before Possible error codes 0xAO clear buffer Operation number 37 Number of parameter 0 From the GSV sended bytes 0 Clear buffer delete the exitpuffer of the GSV s Possible error codes 0xAO set mode Operation number 38 Number of parameter 1 From the GSV sended bytes 0 Set mode configures the GSV for different modes of operation The setted mode stays even after the turn off Before you change the mode register you need to read it with get mode You can only change bits 1 4 Description of mode variable MSB Bit6 Bit5 Bit4 Bit 3 Bit 2 Bit 1 LSB Block x xX Window Modus Log Modus Max Modus Text Modus reserved Text modus 1 transmission in Text Format is aktiv only values Max Modus 1 maximum value transmission is aktiv Log Modus 1 transmission of measured values only by requirement is aktiv Window Modus 1 threshold switch acting as frequency range Block 1 Blocking Zustand All Set Write commands woll be rejected read Switch Blocking Read only x do not change because of the possibility of missunderstandings read GSV mode Range of values 0x00 0x1E ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 22 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de Fil LL Functions by activatin
9. Manufacturer setting 25 19 Manufacturer setting 26 1A get norm 0 3 27 1B get unit 0 1 28 1C get dpoint 0 1 29 1D switch 1 0 30 1E Manufacturer setting 31 1F get serial number 0 8 32 20 set threshold1 4 0 33 21 get threshold1 0 4 34 22 set channel 1 0 35 23 stop transmission 0 0 36 24 start transmission 0 0 37 25 clear buffer 0 0 38 26 set mode 1 0 39 27 get mode 0 1 40 28 Manufacturer setting 41 29 get equipment 0 1 42 2A Manufacturer setting 43 2B firmware version 0 2 44 2C set gauge factor 2 0 45 2D get gauge factor 0 2 46 2E set poisson 1 0 47 2F get poisson 0 1 48 30 set bridge type 1 0 49 31 get bridge type 0 1 50 32 Set Range 1 0 51 33 get range 0 1 52 34 Reseriviert 53 35 get offset wait 0 1 54 36 get options 0 3 55 37 reservated 56 38 reservated 57 39 reservated 58 3A reservated 59 3B get value 0 5 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 10 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de it Operati Operating Command name Number of Number of the from No parameters GSV sended data bytes Hexadezimal clear maximum value set Digits get Digits reservated reservated Get Channel Get Last Error Set Second Threshold Get Second Threshold Get Device Type calc norm 129 81 Get TXmode 0 1 130 82 Set Baud 1 0 Get Baud 0 1 reservated 85 reservated 86 reservated 87 reservated 88 Set Special Mode 89 Get Spe
10. with the charcteristic value of 2 mV V delivers by halv of the normal load 100 of the output signal ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 5 Zero point balancing The balancing range of the amplifier is 120 of the measurment range so that even significantly asymetric bridges can be balanced The operating program of the GSV 2 is going to go through a zero point balncing program itself when there is at the onput T a higher voltage level of more than 3 4V reffering to GND It is permissable to connect the input T with the rating voltage to go through a zero point balacing program This voltage has to stay for a minimum of 8 ms to do so A voltage level at the input T causes within devices with serial interfaces a combination of an offset balancing and a compensation of the digital output value to O The release of an Offset balance and the setting of the output value to O can be done seperatly via the serial interface It takes the GSV 2 approximately 0 12 s for the zero point balancing within devices with an analog filter of 250 Hz and a seted transfer rate of f 10Hz During the balance there is no valid signal at the analog output The serial data transfer and the checking of the threshold values is deactivated for the period of balancing Devices with an analog filter of 2 5 kHz set the zero point within 0 01
11. 4 20 mA The output signal can be found at the clips 9 and10 Ground The sensitivity of the amplifier can be changed by removing the Jumper JP1 from 2 mV V2 to 1 mV V The jumper JP1 is located on the circuit board For more detailed informations have a look at the chapter PCB dimensions of the GSV 2L Connecting the clips 12 and 13 causes a zero point balancing at the analog and digital output The analog output delivers a voltage from 0 V or 4mA The system is then ready for measurements If an RS 232 or RS422 port is used the following connections should be set up to the PC GSV Clip Cable type 9 pol Sub D Pin PC side A GND Interface ground GND 5 B RX Data wire TX 3 C TX Data wire RX 2 D nur RS 422 TX Data wire TX E nur RS 422 RX Data wire RX The data cables RX and TX between the amplifier are crossed by then By starting the configuration mode of the PC the PC is showing measured values 1 If the analog output is used the 6 conductor technology is not supported Selection of the input sensitivity The input sensitivity of the amplifier is in Jumper plug 1 1mV V and in jumper plug 2 2mV V or 3 5mV V have a look at chapter GSV 2L and a look at discriptions of the settings Set Get Range A sensor with the characteristic value of 1 mV V delivers in jumper setting1 within a rated load an analog output signal of 5 V or 10 V or 20 mA depending on your order A sensor
12. Output filter analog output 3B limiting frequency analog Bessel 2 order 250 10 2k5 250 10 2k5 250 10 2k5 Hz Output filter digital 10k 10k 10k 3dB limiting frequency digital and display 2 6 100 2 6 100 Hz Measuring rate digital 10 400 10 400 Hz Resolution gt 30000 parts gt 30000 parts gt 30000 parts Analog output useful output range at Nominal range 0 10V 5 2 11 5 2 11 5 2 11 V Nominal range 5V 5 2 6 5 2 6 5 2 6 V Output resistance 47 47 47 Ohm Analog input Input voltage range 0 10 0 10 V Input resistance 45 45 kOhm Control cables automatic null point balancing Low level lt 1 4 High level gt 3 4 active high V Model GSV 2L GSV 2LS GSV 2ASD FSD Unit GSV 2A GSV 2AS TSD Switch output for threshold value switch 200mA 30V 200mA 30V Saturation voltage lt 1 0 lt 1 0 VDC Port RS 232 RS 232 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 34 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de Ld _ _ Baud rate 38400 8N1 38400 8N1 Baud Operating voltage Nominal range 11 3 30 11 3 30 11 3 26 VDC Operating range 9 8 42 9 8 42 10 32 VDC Current drawn lt 100 lt 120 lt 120 MA with display illumination lt 210 mA Parameter memory Last setting Last setting Last setting manufacturer s manufacturer manufacturer setting setting setting 2 parameter sets 2 paramet
13. SCI CtOIS ccc ccceceececeeeeeenneeeeeeeeeeeeeeeeeeeeeessessennneeeeeeeess 38 Dimensions of the circuit board of the GSV 2L ccc cece cece ee eeeaeeeeeeeeeeeeeeeeeeeeeees 38 Dimensions of the aluminium case of the GSV 2AS 0 ecccececeececeeeeeeeeeeeeeeeeeeeeaeeeeeeeeees 39 Dimensions of the GSV 2TSD cccccceeeeeeeeeeeeeeeeeeeeeeeeseeeeeeensaeaetsstesesseeseeseeeeeeeee AQ Front panel cut out of for the GSV ZF SD iiiscsincieiiisincansasiois sdeevadaaedinasbovanndeniadndansawetsaeniay 40 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 2 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de it Pin Configuration 2 GND P up 2 w S oT SW GND o UA o uE m us o UF re UD UD Ly UF N US y GND 2 Interface u TX o RX re TX ml RX lt GND supply ground Power supply 12 28V DC Power supply 12 28V DC 1 Tara Offset amp Zero 2 Treshold output Ground analog input output analog output analog input negative sensor supply negative sensor supply for 6 wire technology negative difference input positive difference input positive sensor wire for 6 wire technology positive sensor supply supply ground Transmit Data just for RS422 Receive Data just for RS422 Transmit Data Received Data interface ground All ground con
14. V sended bytes 0 This command sets the sample rate and the number of the summands of the average determination as well as the resulting data rate The samplinrate determined how many analog digital transformations the AD converter per second does The relation between measured data range and sample rate shown via the averaging measured data range sample rate average summand amount The average summand amount can assume every value from 1 to 11 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 30 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de T Parameter 1 Average summand amount Parameter 2 Highbyte of the Sampling Rate Register Parameter 2 Lowbyte of the Sampling Rate Register Parameter 1 Bits 6 und 7 must 1 be 0xC1 equivalent average determination OxCB equivalent average determination over 11 summands Parameter 2 and 3 the computation formula for the Sampling Rate Register second and third Parameter of command 138 139 is Registervalue 2 x sample rate Der AD converter of the GSV 21 knows the following discrete sample range 2 5 5 10 15 25 30 50 60 100 500 1000 2000 3750 7500 and 15000 Samples Second It will be setted the next closest available sample range for parameter 2 and 3 if nothing like a too high resulting measured data rate read table under set frequency or one that is too low under 0 125 s speaks against it Absolute range of values
15. cial Mode 8B Read Sampling Rate 8C reservated 8D reservated 8E reservated 8F reservated 90 Set Analogue Filter 2 0 91 Get Analogue Filter 0 2 92 Switch Blocking 3 0 2 Ata normal version with binary output 3 This command can just be done with installed configuration jumper ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 11 Fl Description of commands LLL Comment For most in this chapter discribed commands are operating proclamations with the same name of a Windows DLL it is discribed in the procession manual There are useful tips to understand the RS 232 commands below reset status Operating number 0 number of parameters 0 from the GSV sended bytes 0 Reset status resets the amplifier status and the error code status 0 Possible error codes 0x00 read scale operating number 1 Number of parameters 0 From the GSV sended bytes 3 Read scale determineds the content of the scale registers of the GSVs You can save the seen value on your pc and you can restore it with the help of write scale Possible error codes OxA0O 0x91 read zero operating number 2 number of parameters 0 From the GSV sended bytes 3 Read zero determineds the content of the zero registers of the GSVs You can safe the seen value on your pc and restore it afterwards with the help of write zero possible erro
16. e GSV sended bytes 0 With Set frequency the measured data range of the GSV can be set Frequencies between 0 3125 Hz and 2000Hz can be selected For example at a data range of 100 Hz 100 values per second wil be send to the interface The range of the information signal of the GSV depends on the data range and the settings of analog and digital filter Two of the parameter bytes will be transmit The transmitted register value N does not consist of the datarate itself You can get the datarate by the following formula 10 Pata 512 N Attention After a change of the data rate a balnce with setcal and setzero is necessary Affected register Frequenz The GSV 21 proves the transmitted value of its range of values and it determines the data range for itself which is close to the next value So the data rate is not continious setable a combination of the sampling rate of the AD converter and a firmware intern average value will be determined and set in stead absolute range of values 0x00 00 0xFA 12 The acutal range of values of the data range depends on the seted baud rate and and on the data format output The following connection is true for seted Baudrate default Maxium Data rate Binary Maximum data rate ASCII settings 38400 Bits s output 5 Bytes measured output in Hz value in Hz 4800 90 9 25 9600 181 8 50 19200 333 3 100 38400 625 200 57600 1071 285 7 115200 2000 666 7 Possib
17. er sets Other functions for the serial Programmable threshold value with output hysteresis programmable amplification programmable balancing of the end value scaling function programmable null balancing Nominal temperature range 10 65 10 65 0 450 C Storage temperature range 40 85 40 85 20 70 C Dimensions L x B x H PCB 125 x 53 x 30 125 x 53 x 30 mm Housing 180 x 65 x 36 180 x 65 x 36 180 x 65 x 40 mm Method of protection of the housing variants DIN 40 050 IP66 IP66 IP40 1 for Version LS und AS optionally 2 additional control cables 2 Temperature range and accuracy restricted 3 Display with extended temperature range optional Absolute limiting values all voltages with reference to the supply ground Operating voltage 200 100V Single pulse 200ms 200V Differential input 4 4 12V Sense inputs 4 12V Control wires 30 30V Analog input 20 20V ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 35 Fil Resolution LLL By setting the data frequency amount of measured values per second the analouque prefilter is changed automaticaly as well as filter features of the delta sigma A D Converter Through the intern oversampling and filtering you can do without extra filtering and averaging The charts below show measured values with a s
18. er will be interpreted as a wrong blocking password and after 3 trys with wrong parameters the command will always be denied indipendent of the parameter the eror code in this case is 0x74 After a restart this status will be reset Possible error codes 0xA0 0x70 0x74 General advices and Tips Please attend the actuell documents on http Awww me systeme de software html The command number is sent as a byte to measuring amplifier The command parameter and return parameter are bytes and no numerical values The parameter 01 means 0x01 and not 0x31 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 32 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de Fil Under Windows a DLL with all the features for the measuring amplifier is available LL For the direct programming via RS232 or via CAN Bus the text format is recommended In the binary format every measured value need to be multiplied with the scale factor because the physical measurement range need to be shown for example 2mV V at the Range of values The setting of the datarate and the scale factor is by help of the direct programming via RS232 lavish You can set up to 6 different configurations in the EEProm of the GSV 2 by help of the konfiguration programm GSV EXE and called if its needed with the command getAll In the Textformat is one space character between the numerical value and the CRLF always e
19. eration number 12 Number of parameter 0 From the GSV sended bytes 0 Set zero accomplishs if a sensor is connected a system zero point balancing The analog output is not affected Remark After this command the GSV is not sending datas for a period of time For this purpose all data loggers have to be deleted If Log and maximum value mode have a look at set mode is seted the latest maximum value is getting transmitted once Affected register Zero Possible error codes OxAO set scale Operation number 13 Number of parameters 0 Number of parameters 0 Set scale accomplishs if a sensor is connected a system sensitivity balancing In the contrast to set scale the sensitivity of the entire system including the connected reciver is getting set After a zero point balancing with set zero this operation is able to calibrate the reciverat a full deflection if a normal load is put on it This command has no affect on the analog output Attention Don t accomplish Set scale with a normal load not before a zero point balncing withset zero without a normal load Remark After this command the GSV is not sending datas for a period of time For this purpose all data loggers have to be deleted ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 15 Fl Affected register Scale Possible error codes 0xA0 0x81 0x83 0x71 LLL set of
20. eters will be selected and setted Range of values 0x00 07 0x0D FF LLL Possible error codes 0xA0 0x54 0x55 0x56 0x71 Get analogue filter Operation number 145 Number of parameter 0 From the GSV sended bytes 2 Get analogue filter shows twice the amount of the active setted limit frequency of the analoque prefilter back Possible return values in Standard version are 0x00 07 limitfrequency 3 5 Hz 0x02 08 limitfrequency 260 Hz Ox0D 48 limitfrequency 1 7 kHz Possible error codes 0xA0 0x91 Switch Blocking Operation number 146 Number of parameter 3 From the GSV sended bytes 0 With Switch Blocking the GSV 21 can be protected for unintentional changes of the operationparameter If the blocking status is on every set and write commands will be denied the error code for thi case is 0x71 This status can be identified with Get Mode read Bit 7 Because the GSV commands consist out of only one byte there could be an accidentally call of commands or because of the seriell connected devices PC SPS or other this could happen because of the confusion of portnumbers call of a wrong programm and so on The blocking status is controlled by two constant ASCll strings as a parameter of this command turn on blocking Parameter e3F that means Param 1 0x65 Param 2 0x33 Param 3 0x46 turn off Blocking Parameter k7B that means Param 1 0x6B Param 2 0x37 Param 3 0x42 Attention Every other paramet
21. fset Operation number 14 number of paramerter 0 From the GSV sended bytes 0 Set offset accomplishs a Offset balance of the input stage of the GSV This balance affects in the contrast of set zero the analog output of the GSV Remark While balancing the GSV is not sending any values The collabsed time of the ofset balance can be checkted with get offset wait or it can be checkted in the technical datas as well Affected register Offset Possible error codes 0xA0 0x83 set unit Operation number 15 number of parameter 1 From the GSV sended bytes 0 Set unit sets the wanted unit on the LC display 0 mV V 1 kg 2 g 3 N 4 gt cN 5 V 6 ym m 7 none 8 om 9 kN 10 Ib 11 OZ 12 kp 13 Ibf 14 pdl 15 mm 16 m 17 cCNm 18 Nm ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 16 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de T range of value 0x00 0x12 Possible error code 0xA0 0x54 0x71 set norm Operation number 16 Number of parameter 3 From the GSV sended bytes 0 Set norm standerized the on the LC Display showen value to the transmitted value The standardization takes place without considering the dezimal point It has to be set seperatly with set dpoint To calculate the parameter value for set norm the intermediate value dp for the dezimal point has to get calculated first To do so the log
22. g of taringline Input T MeRwert senden Maximalwert Nullabgleich Maximalwert senden rucksetzen Log Modus off No is Constatly no yes no irrelevant Max Modus off sending measured values Log Modus off no no is sending yes yes Max Modus on constantly max values Log Modus on yes no no no irrelevant Max Modus off Log Modus on no yes yes yes Max Modus on Possible error codes 0xA0 0x56 0x59 0x71 get mode Operation number 39 Number of parameter 0 From the GSV sended bytes 1 Get mode reads the adjusted mode of GSVs read set mode Possible error codes 0xA0 0x91 get equipment Operation number 41 Number of parameter 0 From the GSV sended bytes 1 Get equipment reads informations about the hardware konfigurations of the GSV Description of the equipment variable MSB Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 LSB x X AnaFilt X SI X ADC LCD LCD 1 Liquid Crystal Display installed ADC 1 Analog Digital Konverter always existing SI 1 GSV is intended for use as stretch indicator AnaFilt 1 Adjustable similar input filter available x reserved not defined Possible error codes 0xA0 0x91 firmware version Operation number 43 Number of parameter 0 From the GSV sended bytes 2 Firmware version reads the version number of the firmwares GSV By doing this the first Byte is ten times the version number The second byte contains t
23. he revision number Possible error codes 0xA0 0x91 set gauge factor Operation number 44 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 23 Fl Number of parameter 2 From the GSV sended bytes 0 LL Set gauge factor sets the K factor By using the GSV as a stretch indicator the saved K factor of the bridge type or out of the poisson of the indicating standardisation with calc norm could be recalculated It will be transmitted as a whole 2 byte number it is showing 100 times the K factor Range of values 0x00 09 0x7F BC corresponding K Factor 0 09 bis 327 00 Possible error codes 0xA0 0x54 0x55 0x71 get gauge factor Operation number 45 Number of parameter 0 From the GSV sended bytes 2 Get gauge factor reads the K factor with the before named paddern Possible error codes 0xA0 0x91 set poisson Operation number 46 Number of parameter 1 From the GSV sended bytes 0 Set poisson sets the poisson p The poisson is important by calculating bridge type with one or two measuring grid which are demandet crosswise The poisson is handed over as a whole byte which is 500 times the poisson Range of values 0x00 0xFA entsprechend 0 000 bis 0 500 Possible error codes 0xA0 0x54 0x71 get poisson Operation number 47 Number of parameter 0 From the GSV sended bytes 1 Get poisson read the piosson with the bef
24. her bytes of the switching on threshold the next two correspond to the bytes of the turn off threshold At first the higher byte is expected The turn on value alway needs to be bigger than the turn off value Through the command set mode the funktion of the fensterdiskrimainator can be selected In this case the values are the higher and lower threshold Range of values 0x00 01 00 00 0xFF FF FF FE Hinweis The second threshold is only affecting if the GSV is setted with the right hardware options Possible error codes 0xA0 0x56 0x71 get second threshold Operation number 68 Number of parameter 0 From the GSV sended bytes 4 Get second threshold identify the with set second threshold setted second threshold Possible error codes 0xA0 0x91 Get device Type Operation number 69 Number of parameter 0 From the GSV sended bytes 1 Get device Type name the type number of the connected GSV s at GSV 21 constant 21d Possible error codes 0xA0 0x91 calc norm Operation number 70 Number of parameter 0 From the GSV sended bytes 0 Calc norm answers the calculation of the displaystandartysation according to the stretched reciverfunktionality For this the K factor Bridgetype inputsensitivity and possibly acording to the bridgetype the transversedcontractionnumber has been concidered At the same time channel 0 will be setted as well as the amplification of the AD converter to one and the shown unit to um m Possible error code
25. hielded connecting cable of 1 meter and twisted pairs of wires Similar outputs are found in practice with cable length of 50 meter if seperated control and sensor cable and a good electromagnetic shielding is provided The electronic shielding of the RS232 connecting cable should be put on the grounding plug of the housing Resolution in the measuring range 2 mV V 2 5V supply voltage JP1 in position 2 0 0010 0 0005 0 0000 Scale in mA 0 0005 0 0010 0 10 20 30 40 50 60 70 80 Time in Resolution in the measuring range 1mV V 5V tension of supply JP1 in position 1 0 0002 0 0001 0 0000 Scale in mY A 0 0001 0 0002 0 60 120 180 240 Time in The best resolution at a datarate of 10Hz is at least 30000 digits if you define the measured value compared to the amplitude of the maximum measured value measured value maximum value tolerance ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 36 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de Fil LL The rms resolution from a datarate of 10Hz is at least 150000 displaysteps measured value 2x standart deviation more informations http www me systeme de gsv2 dat html resolution ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 37 Ful LLL Description of the jumpers selector
26. le error codes 0xA0 0x54 0x58 0x80 0x71 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 18 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de Fil LL set gain Operation number 19 Number of parameter 1 From the GSV sended bytes 0 Set gain sets the amplification of the AD converter of the GSV compared to the following table which indicates the finally resulting value of the input sensitivity of the bridge input With Gain Parameter 2 is the normal input sensitivity it means the amplification of the AD converter is 1 The gain register has no affect on the analog output Gain Amlification JP1setting1 JP1 setting 2 with JP1 setting 2 with Parameter of the AD MB 2mV V MB 3 5mV V 2 converter 0 0 25 4 mV V 8 mV V 14 mV V 1 0 5 2mvV V 4mV V 7 mV V 2 1 1mV V 2 mV V 3 5 mV V 3 2 0 5 mV V 1 mV V 1 75 mV V 4 4 0 25 mV V 0 5 mV V 0 875 mV V 5 8 0 125 mV V 0 25 mV V 0 4375 mV V 6 16 0 0625 mV V 0 125 mV V 0 21875 mV V Attention After a change of the amplification a balance with set cal and set zero is necessary Affected register Gain Range of values 0x00 0x06 Possible error codes 0xA0 0x54 0x71 set bipolar Operation number 20 Number of parameter 0 From the GSV sended bytes 0 Set bipolar shifts the GSV in a bipolar mode Zero reffers to the data value 800000 hexa dezimal Possible error codes 0xA0 0x71 set unipolar Operation number 21 Number of para
27. lues 0x00 00 00 0xFF FF FF possible error codes OxA0 0x71 write control Operation number 7 Number of parameters 3 From the GSV sended bytes 0 Write control resets the configuration which was determined with read control before The kind of operatin polarity amplifikation and Notch frequenz are getting set Affected register Channel frequenz gain bi polar un ipolar Range fo values 0x00 00 00 0xFE 76 FF possible error OxA0 0x53 0x54 0x58 0x7 1 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 13 Ful LL write offset Operation number 8 Number of parameters 2 From the GSV sended bytes 0 Write offset sets the Offset configuration of the preamplifier The transmitted parameters correspond to the values which were recently determined with read offset Remarks Just the commands write offset and set offset are affecting the analog output Affected register Offset Range of values 0x00 00 0xOF FF possible errorcodes 0xA0 0x54 0x71 get all Operating number 9 Number of parameters 1 Fom the GSV sended bytes 0 Get all resets the konfiguration chosen by the parameters 0 Setting before the last turn off 1 4 Manufacturer presettings 2 7 f Configurations chosen by the user 1 6 Affected registers channel gain frequenz offset zero scale threshold Range of values 0x00 0x07 possible er
28. meter 0 From the GSV sended bytes 0 Set unipolar sets the GSV in the uni polar mode the measured value 0 correspondents to the data value 0 Possible error codes 0xA0 0x71 2 Have a look at Set Get Range 1 The final value of the imput sensitivity can not be reached because a digital over flow would occur ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 19 Ful Read Frequency LLL Operation number 22 Number of parameter 0 From the GSV sended bytes 3 The 3 returned parameter of the command ReadFrequency sets the setting of the measured data range At the GSV 21 the data range is not absolutly continuous setable look at Set Frequency The with Read Frequency determined true date rate can be a little bit vary from the before determied value for example with Set Frequency The connection for the command 22 is Datenrate 5000000 16777216 Registerwert Possible error codes 0xA0 0x91 0x81 get norm Operation number 26 Number of parameter 0 From the GSV sended bytes 3 Get norm determineds the with set norm seted codation without the related setting of the dezimal point Possible error codes 0xA0 0x91 get unit Operation number 27 Number of parameter 0 From the GSV sended bytes 1 Get unit determineds the with set unit seted unit look at the list of meanigs Possible error codes 0xA0 0x91
29. nections terminals 1 10 15 and A are individually protected in the GSV by means of interference suppressor inductor Terminals 1 and 15 are connected to the housing via interference suppression inductor Currents above 1A between the terminals and the housing result in damage to the interference suppression inductor Before connecting please check whether housing supply ground the ground of your data acquisition system and your port are at the same potential 1 2 can be used for sensing supply interruptions In case of voltages above 3 4 V at this connection a taring process is initiated Offset balancing is then carried out in the analog part of the GSV In case of models with a serial port the digital output is also set to zero in addition 3 4 5 Threshold values are programmed via the RS 232 port only possible in case of version GSV 2LS and GSV 2AS Wires should not be connected to resist continuous short circuit nor with one another nor with GND or Upg When connecting sensors in 4 conductor technology the sensor inputs can be connected with the respective neighboring bridge supply Terminal 3 to terminal 2 and terminal 6 to terminal 7 However there is no need for these connections since the connections are internally bridged with high impedance ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de LLL Fil
30. nput sensitivity of the analog input stage of the GSV21 that means that the position of the jumper JP1 can be determined With the in range coded input sensitivity calculates calc norm the display standardization Range declares 10 times sas much as the full scale value in mV V 10 1 mV V 20 2 mV V 35 3 5 mV V Possible error codes 0xA0 0x91 get offset wait Operation number 53 Number of parameter 0 From the GSV sended bytes 1 Get offset wait determineds the time which has to observe at least after set offset The determined value has to get multiplyed with 0 0062 to get seconds Possible error codes 0xA0 0x91 get options Operation number 54 Number of parameter 0 From the GSV sended bytes 3 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 25 Ful Get options Determineds the information above the range of the instruction set and special characteristics of the firmware as 24 bit value At the GSV 21 bit 6 and bit 8 are always set The lower valued 6 bit is to interpret as whole number in the range from 0 63 and contain the identification of a possible special application Is this Identification different from zero you have to deal wit restrictions of the firmware Possible error codes 0xA0 0x91 LLL get value Operation number 59 Number of parameter 0 From the GSV sended bytes 5 at a binary data transmission
31. ommend will be denied if the setted datarate ist too high for your bautrate If the link plug is setted for the konfiguration mode is the kommunication bitrate always 38400 indipendently of the baut register The setted biterate in the baudregister applyes only with removed link plug JP2 Possible error codes 0xA0 0x54 0x58 0x73 0x7 1 GetBaud Operation number 131 Number of parameter 0 From the GSV sended bytes 1 With GetBaud you can read the former written baudrateregister Possible error codes 0xA0 0x91 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 29 Ful SetSpecialMode LLL Operation number 136 Number of parameter 2 From the GSV sended bytes 0 Via the Special Mode Register speacial features of the GSV 21 are setted The content of highbytes is 0 The content of the Lowbytes is shown in the table below MSB Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 LSB Unipolar xX FIR_N5 AutoFilt x FIR Filter MW Filter x Modus MW Filter Read Only Flag is 1 if Mwsum gt 1 commend 138 139 FIR Filter 1 turns on FIR Filter a digital low pass filter which is connect at the outlet side build after the firmware intern average determination Its barrier frequency depends on the measured data rate AutoFilt if 1 the pre filter will be setted automatically because of the datarate Fdatat In thi
32. ore named pattern Possible error codes 0xA0 0x91 set bridge type Operation number 48 Number of parameter 1 From the GSV sended bytes 0 Set bridge type set the bridge type of the straingage sensor by taking the display standardization with calc norm as basis to recalculate Bridge Half Bridge Quater Bridge Half Bridge with transverse contraction Bridge with transverse contarction 7 i 2 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 24 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de T Range of values 0x00 0x04 Possible error codes 0xA0 0x54 0x71 get bridge type Operation number 49 Number of parameter 0 From the GSV sended bytes 1 Get bridge type reads the bridge type with the before named codierung Possible error codes 0xA0 0x91 Set range Operation number 50 Number of parameter 1 From the GSV sended bytes 0 if the Jumper JP1 on the circuit board is in position 2 that means if the supply voltage of the sensorbridge is 2 5V you can choose the input sensitivity of the analog frontends of the amplifier with Set Range The 10 times higher input sensitivity will be transmitted Valid values are 20d and 35d corresdonding 2mV V or 3 5mV V Range of values 2 reliable values 0x14 und 0x23 Possible error codes 0xA0 0x50 0x56 0x7 1 get range Operation number 51 Number of parameter 0 From the GSV sended bytes 1 Get range reads the seted i
33. parameter parameter absolutly too big 0x54 wrong parameter parameter absolutly too small 0x55 wrong parameter invalid setting combination 0x56 wrong parameter parameter relatively too big 0x57 wrong parameter parameter relaively too small 0x58 wrong parameter functionality not implement in this FW 0x59 To little parameter or rather parameter timeout Ox5A Return was impossible not closer specifyed 0x90 reservated Return was not possible because sending cach was full 0x91 Return was is not yet possible because CAN Bus busy 0x92 Performance was impossible because the recive cach is full 0x99 From this point former command was eventually accomplished but Intern mistaek not closer specifyed 0x80 Intern arithmetical mistake 0x81 ME Me systeme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 27 a a Error at AD converter settings 0x82 Error measurand for wanted action improper 0x83 possibly not only throu the last command koordinated settings but also other settings are loadet Nothing could have changed because the former settings and the loadet settings are similar because of not permitted settingcombinations set second threshold Operation number 67 Number of parameter 4 From the GSV sended bytes 0 Set second threshold Sets the second threshold of the amplifier The first two parameter correspond to the hig
34. r codes OxA0O 0x91 read control operating number 3 number of the parameters 0 From the GSV sended bytes 3 Read control determineds the current configuration of the GSV The returned bytes consists of coded channel dadta rate kind of operation polarity as well as aplifiering of the AD transmitter The recived value can be sended back with write control to the transmitter Possible error codes OxA0 0x91 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 12 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de Fil LL read offset Operation number 4 number of parameters 0 From the GSV sended bytes 2 Read offset determinds the offset setting of the preamplifier The recived value can be sended back with write offset to the GSV Possible error codes OxA0 0x91 write scale operation number 5 number of parameters 3 From the GSV sended bytes 0 Write scale sets the input sensitivity of the AD converter The transmitted 3 bytes should get a value which was recently determined with read scale Affected register Scale Range of values 0x20 00 00 0xFF FF FF possible error codes OxAO 0x55 0x71 write zero Operation number 6 number of prameters 3 From the GSV sended bytes 0 Write zero sets the zero balancing of the AD converter The transmitted 3 bytes have to get a value which was recently determined with read zero Affected register Zero Rabge of va
35. ror codes 0xA1 0x54 0x80 0x71 save all Opertation number 10 number of parameter 1 From the GSV sended bytes 0 Save all saves all relevant registers of the GSV in a intern memory This datas remain even when the device is turned off It is possible to save different configurations After turning on the amplifier 64 memory procedures are possible The parameter indicates the destination of memorization Parameters 2 to 7 From the customer seted configuration 1 to 6 The Positons 0 and 1 are not getting programed by the user On the position O the current configuration of the GSV is automaticlly getting saved You can load the memorized datas with get all Range of values 0x02 0x07 Possible error codes 0xA0 0x54 0x55 0x74 0x71 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 14 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de Fil LL set cal Operation number 11 number of parameter 0 From the GSV sended bytes 0 Set cal accomplishs a intern sensitivity balnce After these balnce you are operating with the amplification which set gain was selecting Attention The calibrations which were done by set scale are getting lost The analog outout is not affected Remark After this command the GSV is not sending datas for a period of time For this purpose all data loggers have to be deleted Affected registers Scale Possible error codes 0xA0 0x82 set zero Op
36. s JP1 changing the bridge supply voltage position 1 left bridge supply voltage 5V input sensitivity 1mV V position 2 left bridge supply voltage 2 5V input sensitivity 2 or 3 5mV V look Set Get Range Attention the jumper need to be plugged on JP2 Configuration mode for baudrate and protokoll settings stucked Configuration mode is active Baudrate is fixed to 38400 Bits s pulled Configuratio mode is inactiv it is essential the baudrate of the baudrate register look Set Get Baud changes will appear after power on reset JP3 change over to the seriell interface from RS232 V24 to RS422 stucked RS422 pulled RS232 V24 delivery condition closing configuration RS232 A GND B RX C TX closing configuration RS422 A GND B RX C TX D RX E TX Dimensions of the circuit board of the GSV 2L 124 116 6 O D g a eh Position 1 Position 2 ise ag 1 HE JP1 JP3 45 6 53 moow gt r ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 38 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de LL Dimensions of the aluminium case of the GSV 2AS ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 39 Fl Dimensions of the GSV 2TSD LL Front panel cut out of for the GSV 2FSD 138
37. s if the serial data transfer has been set at least to 390 Hz ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 6 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de Fil The GSV 2 is equipped with 2 Open Drain outputs clip 11 and 13 These switch thresholds can be set either via the serial port using the configuration program GSV EXE or programmed with the Windows DLL MEGSV DLL The switching output can be optionally used either as a threshold switch or as a window comparator LL Useing of the switching output The switching on threshold has to get a higher value than the switching off threshold The threshold swithch for example can be used to operate a relay by connecting the relay between the positive operating voltage and the threshold value output in the amplifier clip 11 When the higher programmed switch threshold is exceeded the threshold output switches to ground and opens this contact when the lower switch threshold is undershot The positive operating voltage at the relay does not have to correspond to the operating voltage of the amplifier Clamp 14 OU Clamp 15 IGND Threshold switch ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 7 HE RS 232 422 Protocol of the GSV 2 Strain Gauge Bridge Amplifier GSV 2 Data output The GSV is operating at the defa
38. s 0xA1 0x81 0x71 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 28 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de Fil LL GetTXmode Operation number 129 Number of parameter 0 From the GSV sended bytes 1 With GetTXmode you can read flags about the features of the measured value transmission protocol MSB Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 LSB x X x X ls 5 Byte x x Konfiguration konfiguration if 1 the link plug JP2 for the konfiguration mode id setted Is 5 Byte 1 if the binary transmission protocol is aktiv read Set Mode the measurement frame consists out of 5 bytes X reserved do not change Possible error codes 0xA0 0x91 SetBaud Operation number 130 Number of parameter 1 From the GSV sended bytes 0 With SetBaud you can deternemine the serial kommunication of the bitrate The Bitrate can only be changed by setted linkplug JPS for the konfiguration mode read GetTXmode The procedure to change the bitrate is turn off set link plug turn on open interface with 38400 bps programming with SetBaud turn off remove link plug turn on To read the special mode register use command 131 For bautrate apply Parameter Register Baudrate 4800 9600 19200 38400 57600 115200 250000 625000 0 Ni Od 01 BY OIN o 1 25M Your c
39. s case schaltet fg 3 5 Hz schaltet fg 260 Hz schaltet fg 1 7 kHz FIR Filter off if Fdata lt 7 14 s if 7 14 s lt Fdata lt 625 s if Fdata gt 625 s FIR Filter on if Fdata lt 15 s wifenn 15 s lt Fdata lt 1071 s if Fdata gt 1071 s FIR_N5 defined the charakteristik of the digital FIR filters if the FIR Filter is turnt on Bit 2 1 If the FIR_N5 0 itis a 2 order its 3dB boarder frequency is Datarate 0 18 and its transfer function is gentle without overshot in the switch response its operating time is only 3 measured values If FIR_N5 1 its a5 order Its boarder frequency is datarate 0 25 and its transfer function is much steeper in the attenuating band but with 6 overshot in the switch response and the operaing time takes 6 measured values Thats why the FIR Filter 5 order is more recommendable at higher datarates if for example for vibration analysing a very high frequenzy response at the transmission range and a sttep tapered is wished at the attenuating band Unipolar Modus Read Only Flag Shows if the unipolar or bipolar Mode is setted x Reserved do not change Possible error codes 0xA0 0x53 0x59 0x7 1 GetSpecialMode Operation number 137 Number of parameter 0 From the GSV sended bytes 2 With GetSpecialMode you can readout the described register Possible error codes 0xA0 0x91 WriteSamplingRate Operation number 138 Number of parameter 3 From the GS
40. to 8 data bytes are getting transmitted depending on the range of the register You recive the following format for 3 Bytes ASCII 59 HByte MByte LByte for 2 Bytes ASCII 59 HByte LByte Commands to the GSV 2 Commands to the GSV are in the following format Operating P1 P2 P3 P4 number The operating number followed by the parameters P1 P4 is sended The number of the demended parameters is varying with the operating number and is between 0 and 4 ME Me systeme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 9 Fl LLL Table of commands Operati Operating Command name Number of Number of the from No parameters GSV sended data bytes Hexadezimal 0 0 reset status 0 0 1 1 read scale 0 3 2 2 read zero 0 3 3 3 read control 0 3 4 4 read offset 0 2 5 5 write scale 3 0 6 6 write zero 3 0 7 7 write control 3 0 8 8 write offset 2 0 9 9 get all 1 0 10 A save all 1 0 11 B set cal 0 0 12 C set zero 0 0 13 D set scale 0 0 14 E set offset 0 0 15 F set unit 1 0 16 10 set norm 3 0 17 11 set dpoint 1 0 18 12 set frequency 2 0 19 13 set gain 1 0 20 14 set bipolar 0 0 21 15 set unipolar 0 0 22 16 Read frequency 0 3 23 17 Manufacturer setting 24 18
41. to the base of 10 of the wanted standarized value has to get calculated and round off to whole value Afterwards the the wanted standardirized value is devided by 10 to the power of dp If tenanswer is higher than 1 6666 1 05 then it has to get divided by 10 again And you have to add 1 to the dp The so calculated value is getting multiplied by 5250020 and it gets rounded to a whole value The number will get transmitted in the order Highbyte Midbyte Lowbyte to the GSV Range of values 0x10 05 94 0x7F 26 E8 Possible error codes 0xA0 0x54 0x55 0x71 set dpoint Operation number 17 Number of parameter 1 From the GSV sended bytes 0 Set dpoint sets the dezimal point in the LC Display to the wanted place To calculate the parameter value on the basis of a wanted standarized value the latest recived value of the dp from the formula for set norm is used increased by one and as parameter value for the command set dpoint gesendet The setting is just vaild when the parameter value is in the range from 1 to the maximum of 8 this means dpoint is not allowed to be bigger then the setted amount of numbers have a look at Get Digits Absolute range of values 0x01 0x08 Possible error codes 0xA0 0x55 0x56 0x71 ME Me systeme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 17 Fl set frequency LLL Operation number 18 Number of parameter 2 From th
42. tput to the ASCII Format with the help of the configuration program GSV EXE or with Windowas DLL or with the firmware command Set Mode 38d The output recommands to the displayed values and it also can be shown with a terminal program In the default settings the data format is sign 6 numbers dezimal point free space unit CR LF for example 1 2345 kgCRLF Attention If the unit is switched off with the command number 15 setunit then the output end shut down with space and CRLF 1 2345 CRLF 1 1 The baudrate can be changed SetBaud Page 29 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf 8 Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de Fl At the binary coded data prtocoll the measured values are getting standardized to 1 transmitted The display values are a result of the faktor of standadization x measured value The factor of standardization can be set by the command setNorm or with the configuration program This is the formular to calculate the factor of standization factor of standization input sensitivity rated output normal load LL Display settings Example normal load of the load cell 100kg rated output of the load cell 2 mV V Input sensitivity of the strain gauge amplifier 2 mV V gt factor of standardization 100 Output of the register data After requesting the data the datas are getting sended devided by a simicolon 2
43. ult settings with a transfer rate of 38400 Baud 1 Startbit 8 data bits no Parit t und 1 stop bit 8N1 There are two types of data formats for the output of the measuring values 1 Binary format 2 Text format The settings of the data formats are to be done by the software GSV Control The GSV transmits in the normal mode permanent its measuring values to the serial interface In the binary format the GSV transmits 5 bytes for every single measuring value ASCI 44 Stets HBye Meye The first byte is used for the synchronization The status byte transmits information about the status of the GSV s itself This byte can also be used for special costumer requirements Afterwards there are the three data bytes starting with the high byte By this way there were 24 byte transmitted In the uni polar mode the measuring value is equal the data value zero In the bi polar mode corespondens the measuring value zero the data value 800000 as a hexa dezimal measured value At a amplification of 1 mV V you will get the following datas Measured Uni polar Bi polar hexadezimal 00 00 00 0 0 mV V 1 05 mV V 80 00 00 0 525 mV V 0 0 mV V FF FF FF 1 05 mV V 1 05 mV V When another aplification is used it is nessesery to multiply it with the corespondending factor of proportionality The full deflection of 1 05 mV V was chosen to show measuring values which are a bit over 1 0 mV V If nessesary you can switch the data ou
44. ven if the exposition of the unit was turned off The configuration software GSV EXE sets the command setcal automatically It is recomenndet to use always the mode bipolar ME Me systeme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 33 HE Technical Data in case of Us 12 26V DC in the nominal temperature range Model GSV 2L GSV 2A GSV 2LS GSV 2AS GSV 2ASD FSD TSD Unit Accuracy class analog 0 1 0 1 0 1 digital 0 1 0 1 Measurement ranges Analog output 1 1 mV V with the jumper set 2 optional 3 5 2 optional 3 5 mV V Display serial output with the 0 125 0 25 0 5 1 mV V jumper set Connectable full bridges 4 x 350 4 x 350 4 x 350 Ohm Bridge supply voltage 2 5 2 5 2 5 V Input impedance gt 20 300pF gt 20 300pF gt 20 300pF MOhm Common mode rejection DC gt 120 gt 120 gt 120 dB 100Hz gt 100 gt 100 gt 100 dB Linearity deviation lt 0 02 lt 0 02 lt 0 02 v E Temperature influence on the Measuring range 1mV V lt 0 4 v E zero point per 10K typ 0 2 v E Measuring range 2mV V lt 0 2 typ 0 1 Temperature influence on the measuring sensitivity per 10K referred to the measured value lt 0 1 typ 0 05 lt 0 1 typ 0 05 lt 0 1 typ 0 05 Analog output lt 0 01 typ 0 005 lt 0 01 typ 0 005 Display digital
45. xpect the high gradet byte The switch on threshold always need to be bigger then the turn off threshold You can choose the frequency range discriminator With the command set mode In this case you see the values of the upper and lower switch threshold Range of values 0x00 01 00 00 0xFF FF FF FE Possible error codes 0xA0 0x56 0x71 get threshold1 Operation number 33 Number of parameter 0 From the GSV sended bytes 4 Get threshold determine the with set threshold setted switch thresholds Possible error codes 0xA0 0x91 set channel Operation number 34 Number of parameter 1 From the GSV sended bytes 0 Set channel Set a chanel in which you want the AD Converter and restore the for this chanel pre adjusted operating Parameter Channel 0 bridge entrance Channel 1 analog measuring entrance Range of values 0x00 0x01 Possible error codes 0xA1 0x54 0x71 ME MeRsysteme GmbH Neuendorfstr 18a D 16761 Hennigsdorf Tel 03302 559 282 Fax 03302 559 141 info me systeme de www me systeme de 21 Ful stop transmission LLL Operation number 35 Number of parameter 0 From the GSV sended bytes 0 Stop transmission stop the serial transmission of the measured values The serial buffer of the GSV will be deleted This operation status will be lost after turning off the amplifier Possible error codes 0xA0 0x71 start transmission Operation number 36 Number of parameter 0 From the GSV sended bytes

Strain Gage Bridge Amplifier GSV-2 - ME

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