pH ARC Sensors Modbus RTU Programmer’s Manual (EPHUM011)
2.6.2.3Reading all Values for PA9
By reading register 3370, the active physical unit of measurement, the selected value, and the min and max values can be read.
Start | Number of | Reg1 / |
| Reg3 / | Reg5 / |
| Reg7 / | Modbus | Read | Write | |||||
register | registers | Reg2 |
| Reg4 | Reg6 |
| Reg8 | function | access | access | |||||
|
|
|
|
|
|
|
|
|
| code |
|
|
|
| |
3370 | 8 |
| Physical |
| Current | Min |
| Max | 3, 4 |
|
| U/A/S | none | ||
|
|
| unit |
| value | value |
| value |
|
|
|
|
|
| |
Figure 2.6.2.3.1: Definition of register 3370. |
|
|
|
|
|
|
|
|
|
| |||||
|
|
|
|
|
|
|
|
|
| ||||||
Command: Moving average |
| Modbus address: 3370 | Length: 8 |
| Type: 3 | Read |
| ||||||||
Parameter: | Unit |
| Value |
| Min value |
|
| Max value |
|
| |||||
Format: |
| Hex |
| Decimal |
| Decimal |
|
| Decimal |
|
| ||||
Value: |
| 0x01 |
| 10 |
| 1 |
|
|
|
| 16 |
|
|
| |
Figure 2.6.2.3.2: Example to read PA9. The physical unit is 0x01 (“none”), the value is 10 and the limit is 1 to 16.
624300/01 | page 29 / 67 |