
A-35
MODEL 2700
APPENDIX A
MODBUS PROTOCOL
Error Codes for Sensors
21-28
Bit contents
1 - Error active
0 - Error not active
Register
Sensor
21
1
22
2
23
3
24
4
25
5
26
6
27
7
28
8
For all sensors
D00 SENSOR FAILURE
D01 SENSOR TIMEOUT
D02 REC PARITY ERROR
D03 ECHO ERROR
D04 ECHO PARITY ERROR
D05 SENSOR RESET
D06 IREF OUT OF RANGE
D07 RTD IS OPEN
D08 RTD IS CLOSED
For Conductivity Sensors
D09 ELECTRODES SHORTED
D10 ELECTRODES OPEN
D11 OUT OF RANGE (Four-electrode sensor only)
D12 LESS THAN 500uS (Four-electrode sensor only)
D13 spare
D14 spare
D15 spare
For pH/ORP Sensors
D09 pH OUT OF RANGE
D10 mV OUT OF RANGE
D11 VREF OUT OF RANGE
D12 VGLASS OUT OF RANGE
D13 spare
D14 spare
D15 spare
Error Status for Sensors
20
Bit contents
1 - Sensor has an error
0 - Sensor has no error
D00 Sensor1
D01 Sensor2
D02 Sensor3
D03 Sensor4
D04 Sensor5
D05 Sensor6
D06 Sensor7
D07 Sensor8
Содержание 2700
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