Monitoring the compressor via Modbus
The compressor can be monitored via Modbus.
Serial control word
The serial control word is set via the Modbus holding register 110:
Parameter | Unit | Data type | Scaling | Address (I/H) | Register count |
|---|---|---|---|---|---|
Serial control word | None | uint16 | 110(H) | 1 |
Bit definition of the serial control word:
Bit | Function | Description |
|---|---|---|
0 .. 6 | Reserved | |
7 | Reset | Fault reset command is active when bit is set from 0 to 1. |
8 .. 9 | Reserved | |
10 | Data valid | Must be set to 1 to instruct the controller to accept the serial control word. The resulting control word (IR102) will always have this bit set. |
11 .. 15 | Reserved |
Examples of serial control word setups:
Command | Hexadecimal value | Decimal value | Binary | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
Reserved | Data valid | Reserved | Reset | Start | Reserved | Enable operat. | Reserved | |||
Reset | 4BF | 1215 | 00000 | 1 | 00 | 1 | 0 | 11 | 1 | 111 |
Status word
The actual status of the SE-i1 can be seen via the Modbus input register 103.
Parameter | Unit | Data type | Scaling | Address (I/H) | Register count |
|---|---|---|---|---|---|
Status word | None | uint16 | 1 | 103(I) | 1 |
Status word bit definitions
Bit | Function | Description |
|---|---|---|
0 .. 2 | Not used | |
3 | Fault | 0 = No fault alarm(s) |
4 .. 6 | Not used | |
7 | Warning | 0 = No warning alarm(s) |
8 .. 10 | Not used | |
11 | Running | 0 = Compressor is not running |
12 | Not used | |
13 | Critical | 0 = No critical alarm(s) |
14 .. 15 | Not used |