Chino GT120 Series Instruction Manual Download Page 9 | Manualshive

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9

7. Communication command table

When the data (setting value) has a decimal point, remove the decimal point and represent it as a
whole number, then express it in hexadecimal figures.

Private

command

type

Modbus

function

code

Data item

Data

20H/50H 03H/06H 0001H: SV

Setting value

20H/50H 03H/06H 0002H: Not used

20H/50H 03H/06H 0003H: AT setting

0000H: Cancel 0001H: Perform

20H/50H 03H/06H 0004H: OUT proportional band setting

Setting value

20H/50H 03H/06H 0005H: Not used

20H/50H 03H/06H 0006H: Integral time setting

Setting value

20H/50H 03H/06H 0007H: Derivative time setting

Setting value

20H/50H 03H/06H 0008H: OUT pulse cycle setting

Setting value

20H/50H 03H/06H 0009H: Not used

20H/50H 03H/06H 000AH: Manual reset setting

Setting value

20H/50H 03H/06H 000BH: Alarm setting

Setting value

20H/50H 03H/06H 000CH: Not used

20H/50H 03H/06H 000DH: Not used

20H/50H 03H/06H 000EH: Not used

20H/50H 03H/06H 000FH: HB (Heater disconnection alarm)

setting

Setting value

20H/50H 03H/06H 0010H: LA (Loop break alarm) time

setting

Setting value

20H/50H 03H/06H 0011H: LA (Loop break alarm) span

setting

Setting value

20H/50H 03H/06H 0012H: Setting value lock selection

(*1)

0000H: Unlock 0002H: Lock 2
0001H: Lock 1 0003H: Lock 3

20H/50H 03H/06H 0013H: Not used

20H/50H 03H/06H 0014H: Not used

20H/50H 03H/06H 0015H: Sensor correction value setting

Setting value

20H/50H 03H/06H 0016H: Not used

20H/50H 03H/06H 0017H: Not used

20H/50H 03H/06H 0018H: Scaling high limit setting

Setting value

20H/50H 03H/06H 0019H: Scaling low limit setting

Setting value

20H/50H 03H/06H 001AH: Decimal point place selection

0

000H: XXXX (No decimal point)

0

001H: XXX.X (1 digit after decimal

point)

0

002H: XX.XX (2 digits after decimal

point)

0

003H: X.XXX (3 digits after decimal

point)

20H/50H 03H/06H 001BH: PV filter time constant setting

Setting value

20H/50H 03H/06H 001CH: OUT high limit setting

Setting value

20H/50H 03H/06H 001DH: OUT low limit setting

Setting value

20H/50H 03H/06H 001EH: OUT ON/OFF action

Hysteresis setting

Setting value

20H/50H 03H/06H 001FH: Not used

20H/50H 03H/06H 0022H: Not used

20H/50H 03H/06H 0023H: Alarm action selection (*2)

0000H: No alarm action
0001H: Deviation high alarm
0002H: Deviation low alarm
0003H: Absolute value deviation high alarm
0004H: Absolute value deviation low alarm
0005H: Absolute value high alarm
0006H: Absolute value low alarm
0007H: Deviation high alarm with standby
0008H: Deviation low alarm with standby
0009H: Absolute value deviation high

alarm with standby

20H/50H 03H/06H 0024H: Not used

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Summary of Contents for GT120 Series

Page 1: ...ck 1 System configuration RS 485 multi drop connection communication Option Fig 1 1 Fig 1 2 2 Wiring connection When using line converter SC8 10 Connector D sub 25 pin Connection RS 232C RS 485 Communication speed 2400 4800 9600 19200bps Fig 2 1 Host computer GT120 No 0 No 1 No 30 GT8 CDD GT8 CDM Shield wire SD 2 RD 3 SG 7 FG 1 RS 4 CS 5 DR 6 ER 20 CD 8 Host computer D sub connector 25 pin 4 3 RS ...

Page 2: ...For the instrument number setting and communication speed selection refer to the instruction manual for GT120 4 Communication procedure Communication starts with command transmission from the host computer hereafter Master and ends with the response of the GT120 hereafter Slave Response with data When the master sends the reading command the slave responds with the corresponding setting value or c...

Page 3: ...ata in command is transmitted as ASCII characters Data format Start bit 1 bit Data bit 7 bits Parity Even Stop bit 1 bit Error detection Checksum 5 2 Command configuration All commands are composed of ASCII The data setting value decimal number is represented with hexadecimal number and ASCII code is used The negative numbers are represented with 2 s complement 1 Setting command Fig 5 2 1 2 Readin...

Page 4: ...ter side as well to calculate the checksum of the response data from the slaves so that the communication errors can be checked The ASCII code hexadecimal which corresponds to the characters ranging from the address to that before the checksum is converted to binary notation and the total value is calculated The lower 2 digits of the total value are converted to 2 s complements and then to hexadec...

Page 5: ...en No Odd Selectable Stop bit 1 bit 2 bits Selectable Error detection LRC Longitudinal Redundancy Check Data interval 1 second or less 1 Message configuration ASCII mode message is configured to start by colon 3AH and end by CR carriage return 0DH LF Line feed 0AH See Fig 6 2 1 Fig 6 2 1 2 Slave address Slave address is an individual instrument number on the slave side and is set within the range ...

Page 6: ...ead and it is fixed as 30H 30H 30H 31H A response message from the slave in normal status When SV 100 Fig 6 2 3 The number of response bytes means the number of bytes of the data which has been read and it is fixed as 30H 32H A response message from the slave in abnormal status When non existent data item is sent Fig 6 2 4 The function code MSB is set to 1 for the response message in abnormal stat...

Page 7: ... 06H Setting to slaves Function code is used to discern whether the response is normal acknowledgement or if any error negative acknowledgement is occurred when the slave returns the response message to the master When acknowledgement is returned the slave simply returns the original function code When negative acknowledgement is returned the MSB of the original function code is set as 1 for the r...

Page 8: ... as 02H Response message from the slave in abnormal status When data item is mistaken Fig 6 3 4 The function code MSB is set to 1 for the response message in abnormal status 83H The abnormal code 02H Non existent data address is returned as contents of error 2 Setting Instrument number 1 SV 100 Request message from the master Fig 6 3 5 Response message from the slave in normal status Fig 6 3 6 Res...

Page 9: ...ction 1 0000H Unlock 0002H Lock 2 0001H Lock 1 0003H Lock 3 20H 50H 03H 06H 0013H Not used 20H 50H 03H 06H 0014H Not used 20H 50H 03H 06H 0015H Sensor correction value setting Setting value 20H 50H 03H 06H 0016H Not used 20H 50H 03H 06H 0017H Not used 20H 50H 03H 06H 0018H Scaling high limit setting Setting value 20H 50H 03H 06H 0019H Scaling low limit setting Setting value 20H 50H 03H 06H 001AH D...

Page 10: ...000BH Pt100 199 9 to 850 0 000CH JPt100 199 9 to 500 0 000DH Pt100 200 to 850 000EH JPt100 200 to 500 000FH K 320 to 2500 0010H K 199 9 to 750 0 0011H J 320 to 1800 0012H R 0 to 3200 0013H S 0 to 3200 0014H B 0 to 3300 0015H E 320 to 1500 0016H T 199 9 to 750 0 0017H N 320 to 2300 0018H PL 0 to 2500 0019H C W Re5 26 0 to 4200 001AH Pt100 199 9 to 999 9 001BH JPt100 199 9 to 900 0 001CH Pt100 300 t...

Page 11: ...git Converter function 0 Controller 1 Converter 214 digit Not used Always 0 215 digit Key operation change 0 No 1 Yes 20H 03H 0086H Not used 20H 03H 0087H Not used 20H 03H 00A0H Not used 20H 03H 00A1H Instrument information reading 0000 0000 0000 0000 215 to 20 20 digit Not used Always 0 21 digit Not used Always 0 22 digit Alarm function 0 Not applied 1 Applied 23 digit Not used Always 0 24 digit ...

Page 12: ...y check Checksum LRC CRC Data format Start bit 1 Data bit 7 8 Parity Even Odd No parity Stop bit 1 9 Troubleshooting If any malfunctions occur refer to the following items after checking the power supply to the master and the slave Problem If it is unable to communicate Check the following The connection or wiring of communication is not secure Burnout or imperfect contact on the communication cab...

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