pH ARC Sensors Modbus RTU Programmer’s Manual (EPHUM011)
2.5.3.3Reading the measurement value of PMC6
Register 2410 is also used to read the measurement values of PMC6.
Start | Num- | Reg1 / | Reg3 / | Reg5 / | Reg7 / | Reg9 / | Modbus | Read | Write |
reg. | ber of | Reg2 | Reg4 | Reg6 | Reg8 | Reg10 | function | access | access |
| reg. |
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| code |
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2410 | 10 | Selected | Measure | Measure | Min | Max | 3, 4 | U/A/S | none |
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| physical | allowed | allowed |
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| unit | value of | status (2) | value (1) | value (1) |
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| PMC6 (1) |
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Figure 2.5.3.3.1: Definition of register 2410. Measurement value of PMC6.
(1)Value is always in the physical unit defined in register 2410.
(2)For definition of the status see chapter 2.5.4. All bits set to zero means: no problem.
Command: PMC6 read |
| Modbus address: 2410 | Length: 10 | Type: 3 | Read | |||
Parameter: | Unit | Value |
| Status | Min limit |
| Max limit |
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Format: | Hex | Float |
| Hex | Float |
| Float |
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Value: | 0x04 | 24.35834 |
| 0x00 |
| 130 |
|
Figure 2.5.3.3.2: Example to read register 2410. Physical unit is set to °C (0x04), PMC6 is 24.35834 °C, Status is 0x00, Min allowed value is -20 °C, Max allowed value is 130 °C.
For definition of the measurement status see chapter 2.5.4.
Attention:
You cannot read selectively the registers 3 and 4 for the measurement value only. You have to read the entire length of the command (10 registers) and extract the desired information.
2.5.3.4Input of an Externally Measured Temperature
Unlike to the VISIFERM DO, this feature is not available for pH ARC Sensors.
2.5.4 Definition of the Measurement Status for PMC1 / PMC6
This is the definition of the status registers read in registers 2090 (PMC1) and 2410 (PMC6):
Bit # | Hex code | Description |
0 (LSB) | 0x01 | Temperature out of measurement range (see chapter 2.8.1) |
1 | 0x02 | Temperature out of operating range (see chapter 2.8.1) |
2 | 0x04 | Calibration status not zero (see chapter 2.7.4) |
3 | 0x08 | Warning not zero (see chapter 2.8.3) |
4 | 0x10 | Error not zero (see chapter 2.8.4) |
Figure 2.5.4.1: Definition of measurement status for Primary Measurement Channels.
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