Hamilton Electronics EPHUM011 - page 31

pH ARC SensorsModbus RTU Programmer’s Manual (EPHUM011)
624300/01 page 31/ 67
By writing toregister 3466, the active physical unit for PA12 can be selected, by choosing one ofthe
physical unitst hat aredefined in register 3464. The value of the parameter can be set as well.
Command: Movingaverage Modbusaddress: 3466 Length: 4Type: 16 Write
Parameter: Unit Value
Format: Hex Decimal
Value: 0x01 7
Figure 2.6.3.2.4:Example to set the physical unit of PA12 to “none”(0x01) andt hev alue of the moving
average R to 7.
2.6.3.3 Reading all Valuesfor PA12
By reading register3466, the active physical unit of measurement, the selected value, and themi n and
max values can be read.
Start
register Number of registers Reg1/ Reg2 Reg3/ Reg4 Reg5/ Reg6 Reg7/ Reg8 Modbus function
code
Read
access Write access
3466 8 Physical
unit Current value Min value Max value 3, 4 U/A/S none
Figure 2.6.3.3.1:Definition of register 3466.
Command: Movingaverage Modbusaddress: 3466 Length: 8Type: 3Read
Parameter: Unit Value Min value Max value
Format: Hex Decimal Decimal Decimal
Value: 0x01 7 1 16
Figure 2.6.3.3.2:Example to read PA12. The physical unit is 0x01 (“none”),t hev aluei s 7, and the
limits are 1 to 16.