General Measure GM8802F-2 User Manual Download Page 24

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GM8802F-2 Field Mounting Transmitter

GM8802-F2110101

40021

0020

Reserved bit

Fixed data:

0x7F+'R'+'E'+'V'

40023

0022

Reserved bit

40025

0024

State from channel no.

1~2

Channel no.

sign

：

bit0

：

unstable

stable

bit1

：

normal

overflow

bit2

：

nonezero

zero

bit3

：

positive sign

minus sign

bit4

：

0 AD

normal /

1 AD

error

bit5

：

0AD

shut

1AD

start

Channel no.

sign

：

bit6

：

unstable

stable

bit7

：

normal

overflow

bit8

：

nonezero

zero

bit9

：

positive sign

minus sign

bit10

：

0 AD

normal /

1 AD

error

bit11

：

0AD

shut

1AD

start

bit12

bit31

：

（

reserve

）

40027

0026

GM8802-F2 code

GM8802-F2 read code:

0x30324632(ASCII code is 02F2)

Two bytes read and write(optional) address

（

function code

：

，

）

40101

0100

Channel no.

digital filter

Please see Character 4 for details.

40102

0101

Channel no.

stable range

40103

0102

Channel no.

stable time

40104

0103

Channel no.

zero-tracking range

40105

0104

Channel no.

zero-tracking range

40106

0105

Channel no.

zeroing

range

40107

0106

Channel no.

unit

40108

0107

Channel no.

deciaml

digits

40109

0108

Channel no.

minimum

division

40110

0109

Channel no.

anti-vibration parameters

40111

0110

Channel no.

digital filter

40112

0111

Channel no.

stable range

40113

0112

Channel no.

stable time

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Summary of Contents for GM8802F-2

Page 1: ...GM8802F 2 USER S MANUAL GM8802F 02110201 48010221221000 w w w z e m i c u s a i n f o ...

Page 2: ...ns or person must not copy spread record or translate into other language by any forms Our company reserved the right to update user s manual without additional notice to customers by reason of update so please visit our website or contact with our service person to get update information Website http www szgmt com Approved standard GB T 7724 2008 WARNING POWER SUPPLY 24V DC w w w z e m i c u s a ...

Page 3: ...w w w z e m i c u s a i n f o ...

Page 4: ...l port communication 10 5 1 Parameters 10 5 1 1 Configuring address 10 5 1 2 Configuring communication parameters 11 5 2 Communication protocols 12 5 2 1 GM SP1 protocol 12 5 2 1 1 Parameters code table 13 5 2 1 2 Read operatioin 14 5 2 1 3 Write operation 15 5 2 1 4 Calibration 17 5 2 1 5 Optional operation 18 5 2 1 6 Error message solution 19 5 2 2 Modbus communication 20 5 2 2 1 Modbus address ...

Page 5: ...o instead of being placed in the indoor control panel The robust casing allows the transmitter to be placed in the industrial site close to loadcell dramatically reducing the amount of shielded analogue line needed and creating significant savings on the project s bottom line Key Features CE Approved IP65 casing allows performance in the worst industrial environment Used in systems with PLC PC Pow...

Page 6: ...ght when receive a data string every time the light sparkle one time Light or dark long time means no data string received TXD Sending light when send a data string every time the light sparkle one time Light or dark long time means no data string sent G Dip switch H Programme on line for manufactory I Serial port mode RS232 or RS485 optional J 24V power supply input terminals K 24V power supply o...

Page 7: ...Layer FIR filter with 9 selectable levels Weighing Functions Zero zero tracking ENVIORNMENTAL Operating Temperature 10 to 40 Storage Temperature 25 to 70 Relative Humidity 90 R H without dew IP Level IP 65 LOAD CELLS Excitation 5V Number of 350Ω Load Cells 8 MECHANICAL DATA Dimensions Weight 270 200 78 mm L W H weighs approx 1500g Certification CE Enclosure Cast aluminum body Modbus RTU ASC II int...

Page 8: ...mitter GM8802 F2110101 5 2 Wiring 2 1 Installation 1 Tighten the screws on hanging mount 2 Loose the screws on transmitter in suitable place 3 Fix the transmitter on hanging mount and tighten the screws w w w z e m i c u s a i n f o ...

Page 9: ...ype resistance strain gauge load cells by 6 wires or 4 wires as follows Load cell terminals Terminal EX EX SN SN SIG SIG GND Connection Excitation Excitation Sense Sense Signal Signal Shield 6 wires connection 4 wires connection Note 1 As load cell output sensitive analog signal please use shield cable to separate with other cables especially AC power 2 Please refer load cell instruction or contac...

Page 10: ...101 7 2 4 Serial port connection GM8802F 2 Field Mounting Transmitter supply 1set of serial port RS232 RS485 optional to communicate with host computer as follows RS232 RS485 serial ports RS232 connection RS485 connection w w w z e m i c u s a i n f o ...

Page 11: ...data Normal Every AD collects weighing data respectively at high speed and related lights sparkle fleetly which means AD convert in normal state Problem 1 If the light is still not bright message indicates the AD hasn t finished initialization please restart again If the problem is same please check main board to see whether there are burs on main board or not clear them first and restart again If...

Page 12: ... Description Filter grade 4 0 9 0 none 9 strongest Stability range 2d 1 9d If present weight change at stability range in stability time then transmitter confirm the weight value is stable Stability time 1 0S 0 1 1 0S Zero tracking range 0d 0 9d If present weight is at zero tracking range in zero tracking time the transmitter track zero but not track zero when Zero tracking range is 0 Zero trackin...

Page 13: ... communication parameters Please refer 5 1 1 and 5 1 2 to configure address and parameters by dip switches 5 1 1 Configuring address GM8802F 4 have six dip switches D1 D6 which near digital number define 0 and near ON define 1 D1 D5 configure address as following table D1 D2 D3 D4 D5 Address 0 0 0 0 0 01 0 0 0 0 1 02 0 0 0 1 0 03 1 1 1 1 1 32 Address arithmetic Convert binary system related presen...

Page 14: ...uter by update parameters Define parameters as following fixed protocol Data format 7bits 1 bit stop Even 7 E 1 Baud rate 38400 Code ASCII Command STX Address U S E T DATA1 DATA2 DATA3 DATA4 CRC CR LF Response STX Address U S E T O K CRC CR LF Here STX 1bit start character 02H Address 2bit range from 01 16 30H 31H 31H 36H U 1bit 55H S 1 bit 53H E 1 bit 45H T 1 bit 54H DATA1 1 bit baud rate 30H 960...

Page 15: ...digit in the front and unit s digit at back For example Checksum Case 1 Define address 01 parameters baud rate 38400 ModbusASCII data format 7 E 1 high byte in the front Command 02 30 31 55 53 45 54 32 31 30 30 31 35 0D 0A Response 02 30 31 55 53 45 54 4F 4B 37 34 0D 0A Case 2 Define address 01 parameters baud rate 57600 Modbus RTU data format 8 E 1 low byte in the front Command 02 30 31 55 53 45 ...

Page 16: ...s code table Code Parameter code Parameters Description R W FL Digital filter 1bit 0 9 in ASCII R W MR Stability range 1 bit 1 9 in ASCII R W MT Stability time 2 bits 01 10 inASCII R W TR Zero tracking range 1 bit 0 9 in ASCII R W TT Zero tracking time 2 bits 05 10 15 20 in ASCII R W ZR Zeroing range 2 bits 01 99 in ASCII R W UN Unit 1 bit 0 3 in ASCII R W PT Decimal digits 1 bit 0 4 in ASCII R W ...

Page 17: ...ess Channel no R W T CRC CR LF Correct response STX Address Channel no R W T State Weight CRC CR LF Here STX 1bit start character 02H Address 2bits range from 01 16 30H 31H 31H 36H Channel no 1bit 31H channel no 1 32H channel no 2 R 1bit 52H W 1bit 57H State 2bits High byte Low byte Fixed 40H D7 D6 D5 D4 D3 D2 D1 D0 None Fixed 1 0 AD shut 1 AD start 0 AD normal 1 AD error 0 positive 1 minus 0 nonz...

Page 18: ...4 31 37 0D 0A Correct response 02 30 31 41 52 57 54 40 61 30 30 30 32 33 30 40 63 20 20 4F 46 4C 20 30 33 35 34 0D 0A Means Channel no 1 AD start normal positive weight nonzero stable weight 230 Channel no 2 AD start normal positive weight overflow nonzero stable weight OFL 3 Read other parameters The data format of read command and response are same Please see parameter table to read and write Re...

Page 19: ... 10000 Write command 02 30 31 31 57 44 43 30 35 30 31 30 30 30 30 36 30 0D 0A Correct response 02 30 31 31 57 44 43 4F 4B 32 34 0D 0A 2 Write other parameters The data format of read command and response are same Please see parameter table to read and write Write command STX Address Channel no W Parameter code Value CRC CR LF Correct response STX Address Channel no W Parameter code O K CRC CR LF H...

Page 20: ...bration command STX Address Channel no C G Y Weight CRC CR LF Correct response STX Address Channel no C G Y O K CRC CR LF Here G 1bit 47H Weight 6bits present weight value For example Gain calibration to address 01 in channel no 1 after loading weight 80 of maximum capacity Command data format from host computer as follows 02 30 31 31 43 47 59 30 30 30 32 30 30 36 35 0D 0A Correct response 02 30 3...

Page 21: ...1 Calibration command 02 30 31 31 43 5A 4E 30 31 32 36 31 30 38 31 0D 0A Correct response 02 30 31 31 43 5A 4E 4F 4B 33 37 0D 0A 2 Gain calibration without weights Calibration command STX Address Channel no C G N Gain millivolt Gain weight CRC CR LF Correct response STX Address Channel no C G N O K CRC CR LF Here G 1bit 47H N 1bit 4EH Gain millivolt 6bit gain millivolt value related weights decima...

Page 22: ...sends an error code to host computer Error message STX Address Channel no Optional code Parameter code E Error code CRC CR LF Here Optional code 1bit Please refer Character 5 2 1 1 Parameter code table Parameter code 2bit Please refer Character 5 2 1 1 Parameter code table Error code 1bit error code 1 31H CRC verify error 2 32H Operation code is wrong 3 33H Parameter code is wrong 4 34H Write wron...

Page 23: ...it5 0AD shut 1AD start bit6 bit31 0 reserve 40005 0004 Weight from channel no 2 Four bytes including sign When AD is error 0x7F455252 low 3bits is E R R When AD shut 0x7F4F4646 low 3bits is O F F When weight overflow 0x7F4F464C low 3bits is O F L 40007 0006 State from channel no 2 bit0 0 unstable 1 stable bit1 0 normal 1 overflow bit2 0 nonezero 1 zero bit3 0 positive sign 1 minus sign bit4 0 AD n...

Page 24: ...bit31 0 reserve 40027 0026 GM8802 F2 code GM8802 F2 read code 0x30324632 ASCII code is 02F2 Two bytes read and write optional address function code 03 06 40101 0100 Channel no 1 digital filter Please see Character 4 for details 40102 0101 Channel no 1 stable range 40103 0102 Channel no 1 stable time 40104 0103 Channel no 1 zero tracking range 40105 0104 Channel no 1 zero tracking range 40106 0105 ...

Page 25: ...hannel no 1 read relative zero millivolt value from channel no 1 including sign 40207 0206 Channel no 1 zero calibration without weights Write zero millivolt value Read zero millivolt value 40209 0208 Write gain millivolt when Channel no 1 gain calibration without weights Write both of command to finish grain calibration Read millivolt value and weight individually which are input at calibration w...

Page 26: ...inus sign 0305 0304 Channel no 1 AD error sign 0 AD normal 1 AD error 0306 0305 Channel no 1 AD start shut 0 AD shut 1 AD start 0307 0306 Channel no 2 stable sign 0 unstable 1 stable 0308 0307 Channel no 2 normal overflow sign 0 normal 1 overflow 0309 0308 Channel no 2 zero sign 0 nonezero 1 zero 0310 0309 Channel no 2 positive minus sign 0 positive sign 1 minus sign 0311 0310 Channel no 2 AD erro...

Page 27: ...ixed 0 0409 0408 Channel no 1 start shut Write ON to start AD OFF to shut AD Read 0 means AD shut 1 means AD start 0410 0409 Channel no 2 start shut Write ON to start AD OFF to shut AD Read 0 means AD shut 1 means AD start 0411 0410 Reserve Write operation Ineffective and return error message Read operation read fixed 0 0412 0411 Reserve Write operation Ineffective and return error message Read op...

Page 28: ... O 1 7 bits digits 2 bits stop none 7 N 2 Baud rate 9600 19200 38400 57600 optional Code ASCII 5 2 2 3 Function code Above Modbus communication protocols have five function codes 01 read coil 03 read register 05 force single coil 06 preset single register 16 preset several registers 01 read coil Inquiry Regulate coil start and quantities Response a Every coil state in response message is correspon...

Page 29: ...rrect response 3A 30 31 30 31 30 31 30 31 46 43 0D 0A Coil 0303 0300 related state 0 0 0 1 03 read register Inquiry Regulate to read register start address and register quantities Response Register data is binary system every register relate 2bytes respectively the first byte is high digit and the send one is low digit For example read register 0100 0101 1 RTU mode Inquiry command Data format Addr...

Page 30: ...coil Inquiry Regulate force coil address and one normal item in force data area regulate requested coil ON OFF state FF00 for ON 0000H for OFF other data is ineffective to coil Response Return normal response for force coil For example Force ON state to 0410 coil in address 01 1 RTU mode Inquiry command Data format Address Function code Coil address Force data CRC parity Bytes 1 1 2 2 2 Correct re...

Page 31: ...code Preset register address Preset value CRC parity Bytes 1 1 2 2 2 Correct response Data format Address Function code Preset register address Preset value CRC parity Bytes 1 1 2 2 2 Inquiry command 01 10 00 64 00 05 41 D5 Correct response 01 10 00 64 00 05 41 D5 0100 register value 5 Hex 0005H 2 ASCII mode Inquiry command Data format Start Address Function code Preset register address Preset val...

Page 32: ...y CRC parity Bytes 1 1 2 2 2 Inquiry command 01 10 00 C8 00 02 04 00 01 73 18 8A A3 Correct response 01 10 00 C8 00 02 C0 36 2 ASCII mode Inquiry command Data format Start Address Function code Start address Register quantity Counting bytes Preset value LRC parity End Characters 1 2 2 4 4 2 8 2 2 Correct response Data format Start Address Function code Start address Register quantity LRC parity En...

Page 33: ...a Note Return the code when CRC LRC is error The data format of error message from GM8802F 2 to host computer as follows 1 RTU mode Data format Address Function code Error message code CRC parity Bytes 1 1 1 2 2 ASCII mode Data format Start Address Function code Error message code LRC parity End Bytes 1 2 2 2 2 2 For example 1 RTU mode Inquiry command 01 03 01 2E 70 54 Correct response 01 83 02 C0...

Page 34: ...GM8802F 2 Field Mounting Transmitter GM8802 F2110101 31 w w w z e m i c u s a i n f o ...

Page 35: ...GM8802F 2 Field Mounting Transmitter GM8802 F2110101 32 6 2 Hanging mount and hole size w w w z e m i c u s a i n f o ...

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