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pH ARC Sensors Modbus RTU Programmer’s Manual (EPHUM011)
624300/01 page 66 / 67
Command: Info user
Modbus address: 1568 Length: 8 Type: 16
Write
Parameter: Text
Format: Character
Value:
Hello World
Figure 2.9.3.2: Example to write 16 ASCII characters to register 1568 with operator A or S.
Command: Info user
Modbus address: 1568 Length: 8 Type: 3
Read
Parameter: Text
Format: Character
Value:
Hello World
Figure 2.9.3.3: Example to read the register 1568 (written in figure 2.9.1.6).
2.10 System Commands
2.10.1 Recall Sensor’s Factory Settings
Using register 8192 you can recall the sensor manufacturer values (interfaces, calibration data and
passwords), except the SIP and CIP data which remain unchanged. By sending the recall value
“732255”, all configuration values will be set to default.
Start
register
Number of
registers
Reg1 / Reg2 Modbus
function code
Read
access
Write
access
8192 2 Recall by value 732255 16 none S
Figure 2.10.1.1: Definition of register 8192.
Command: Recall
Modbus address: 8192 Length: 2 Type: 16
Write
Parameter: Recall
Format: Decimal
Value:
732255
Figure 2.10.1.2: Example to write the restore command.
3 Abbreviations
AO Analog Output Interface
CP Calibration Point
ECS Electrochemical Sensor Interface
PMC Primary Measurement Channel
SMC Secondary Measurement Channel