pH ARC Sensors Modbus RTU Programmer’s Manual (EPHUM011)
2.8.3 Warnings
A “Warning”is a notification message which still allows further functioning of the system. This message alerts the operator of a possible problem that could lead to uncertain results.
2.8.3.1Currently Active Warnings
The currently active warnings are stored in register 4736.
Start | Number of | Reg1 / | Reg3 / | Reg5 / | Reg7 / | Modbus | Read | Write |
register | registers | Reg2 | Reg4 | Reg6 | Reg8 | function | access | access |
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4736 | 8 | Active | Active | Active | Active | 3, 4 | U/A/S | none |
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| warning | warning | warning | warning |
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| measure- | calibration | interface | hardware |
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| ment | (bitwise | (bitwise | (bitwise |
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| (bitwise | defined) | defined) | defined) |
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| defined) |
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Figure 2.8.3.1.1: Definition of register 4736 (see chapter 2.8.3.3)
Command: Active warning |
| Modbus address: 4736 | Length: 8 | Type: 3 | Read | ||
Parameter: | W Measurement | W | Calibration | W Interface | W Hardware |
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Format: | Hex | Hex | Hex |
| Hex |
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Value: | 0x00 | 0x00 | 0x00 |
| 0x00 |
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Figure 2.8.3.1.2: Example to read the currently active warnings.
2.8.3.2History of Warnings
The history of warnings is not implemented in pH ARC Sensors.
2.8.3.3Definition of Warnings
Bit # | Hex | Description |
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| not available |
Figure 2.8.3.3.1: Definition of warnings “measurement”. None is defined.
Bit # | Hex | Description |
0 (LSB) | 0x0001 | PMC1 (pH) calibration recommended |
1 | 0x0002 | PMC1 (pH) last calibration not successful |
Figure 2.8.3.3.2: Definition of warnings “calibration”. | ||
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Bit # | Hex | Description |
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| not available |
Figure 2.8.3.3.3: Definition of warnings “interface”. None is defined.
Bit # | Hex | Description |
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| not available |
Figure 2.8.3.3.4: Definition of warnings “hardware”. None is defined.
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