pH ARC Sensors Modbus RTU Programmer’s Manual (EPHUM011)
2.4.5.8Defining the Error and Warning Output of the
Errors and warnings can be mapped to the AO1 / AO2.
Start | Number of | Reg1 / | Reg3 / | Reg5 / | Reg7 / | Modbus | Read | Write |
register | registers | Reg2 | Reg4 | Reg6 | Reg8 | function | access | access |
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4386 | 8 | Code of | Current | Current | Current in | 3, 4, 16 | U/A/S | S |
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| warnings | in case of | in case of | case of |
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| and errors | “warning” | “error” | “T exceed” |
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| (see Figure | [mA] | [mA] | [mA] |
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| 2.4.4.8.2) | for AO1 | for AO1 | for AO1 |
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| for AO1 |
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4514 | 8 | Code of | Current | Current | Current in | 3, 4, 16 | U/A/S | S |
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| warnings | in case of | in case of | case of |
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| and errors | “warning” | “error” | “T exceed” |
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| (see Figure | [mA] | [mA] | [mA] |
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| 2.4.4.8.2) | for AO2 | for AO2 | for AO2 |
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| for AO2 |
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Figure 2.4.5.8.1: Definition of register 4386 / 4514.
Bit # | Code (hex) | Behaviour of the |
0 (LSB) | 0x000001 | Error continuous output |
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| not available |
16 | 0x010000 | Warning continuous output |
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| not available |
Figure 2.4.5.8.2: Code for the 4-20 mA interface in case of errors and warnings.
If the corresponding bits for the errors and warnings are not set (=0x00), the respective options are inactive.
The default settings are:
Code 0x01
| current in case of warnings: | 3.5 mA |
| current in case of errors: | 3.5 mA |
current in case of temperature exceed: 3.5 mA
Command: ErrorWarnings AO1 | Modbus address: 4386 | Length: 8 | Type: 3 | Read | ||
Parameter: | Warning code | Current in case of | Current | in case of | Current in case of | |
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| warning | error |
| temperature exceed | |
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| [mA] | [mA] |
| [mA] |
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Format: | Hex | Float | Float |
| Float |
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Value: | 0x010001 | 3.5 | 3.5 |
| 3.5 |
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Figure 2.4.5.8.4: Example: Read the settings for AO1 in case of warnings and errors. Warning code 0x010001 corresponds to the continuous output current in case of warning (0x010000) and continuous output current in case of error (0x01) of 3.5 mA. The output current in case of temperature exceed is 3.5 mA.
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