Hamilton Electronics EPHUM011 - Manual (Page 31)

pH ARC Sensors Modbus RTU Programmer ’ s Manual (EPHUM011)
624300/01 page 31 / 67
By writing to register 3466, the active physical unit for PA12 can be selected, by choosing one of the
physical units that are defined in register 3464. The value of the parameter can be set as well.
Command: Moving average Modbus address: 3466 Length: 4 Type: 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) and the value of the moving
average R to 7.
2.6.3.3 Reading all Values for PA12
By reading register 3466, the active physical unit of measurement, the selected value, and the min 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: Moving average Modbus address: 3466 Length: 8 Type: 3 Read
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 ” ), the value is 7, and the
limits are 1 to 16.