pH ARC Sensors Modbus RTU Programmer’s Manual (EPHUM011)
2.6Configuration of the Measurement
This chapter describes the configuration of PMC1 and PMC6 by means of measurement parameters (PA).
2.6.1 Available Parameters
In register 3072, all available parameters (PA) are given.
Start | Number of |
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register | registers |
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| function code | access | access | ||||||
3072 | 2 |
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| Available parameters (see figure 2.6.1.2) | 3, 4 |
| U/A/S | none | ||||||
Figure 2.6.1.1: Definition of register 3072. |
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Bit # |
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| Description | Definition in pH ARC Sensors |
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0 (LSB) |
| 0x0001 |
| PA1 |
| not available |
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| not available |
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7 |
| 0x0080 |
| PA8 |
| not available |
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8 |
| 0x0100 |
| PA9 |
| Moving average |
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9 |
| 0x0200 |
| PA10 |
| not available |
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10 |
| 0x0400 |
| PA11 |
| not available |
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11 |
| 0x0800 |
| PA12 |
| Moving average R |
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| not available |
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15 (MSB) |
| 0x8000 |
| PA16 |
| not available |
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Figure 2.6.1.2: | Bitwise definition | of parameters PA1 to PA16, valid for pH ARC Sensors |
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Command: Available parameters | Modbus address: 3072 | Length: 2 | Type: 3 |
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Parameter: | Measurement |
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| parameters |
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Format: |
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Value: |
| 0x0900 |
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Figure 2.6.1.3: Example to read the available parameters. The value 0x0900 corresponds to 0x0100 (PA9) + 0x0800 (PA12). Parameter 9 and 12 are available.
Genereal note:
PA1 to PA8 use FLOAT as data format for its values
PA9 to PA16 use UNSIGNED INT as data format for its values.
624300/01 | page 26 / 67 |
