pH ARC SensorsModbus RTU Programmer’s Manual (EPHUM011)
624300/01 page 60/ 67
2.8.4 Errors
An “Error”message indicates a serious problem of the sensor which does not allow further proper
functioning oft hesensor. This problem must be solved.
2.8.4.1 Currently ActiveErrors
The currently activeerrors are stored in register 4800.
Start
register Number
of
registers
Reg1 /
Reg2 Reg3/
Reg4 Reg5/
Reg6 Reg7/
Reg8 Modbus
function
code
Read
access Write
access
4800 8 Active error
measure-
ment
(bitwise
defined)
Active error
calibration
(bitwise
defined)
Active error
interface
(bitwise
defined)
Active error
hardware
(bitwise
defined)
3, 4 U/A/S none
Figure 2.8.4.1.1: Definitionof register 4800 (see chapter 2.8.4.3)
Command: Active errors Modbusaddress: 4800 Length: 8Type: 3Read
Parameter: EMeasurement E Calibration E Interface EHardware
Format: Hex Hex Hex Hex
Value: 0x00 0x00 0x00 0x00
Figure 2.8.4.1.2: Examplet o read the currently active errors.
2.8.4.2 History of Errors
The history of errors is not implemented in pH ARC Sensors.