Measurement data is located in Modbus 3X and 4X memory areas. The polled measured data is mapped to MMVI4GAPC and MMVF4GAPC functions data objects.
In CMT, the Readable register -type menu is to be selected.
The following parameters can be configured by the user:
| Property | Range | Editable | Description |
|---|---|---|---|
| Mapping | 1 | No | Mapping number |
| Slave Number | 1... 255 | Yes | Modbus Slave number for the request |
| Register Type | 3 - 3x area | Yes | Modbus area where the requested value exists |
| 4 - 4x area | |||
| Point Address | 1... 65535 | Yes | Modbus data address an empty address field disables the polling for that signal |
| Coding | 1 ... 255 | Yes | How is the requested Modbus value coded: |
| 1 - 16 bit integer | |||
| 2 - 16 bit signed integer | |||
| 3 - 32 bit integer | |||
| 4 - 32 bit signed integer | |||
| 5 - 32 bit integer Register swap | |||
| 6 - 32 bit signed integer Register swap | |||
| 7 - Float32 value | |||
| 8 - Float32 value Register swap | |||
| 9 ... 255 – expansion | |||
| Description | ASCII 20 characters | No | 20 characters or less. This text is provided as an information field on the block and input in use |
| Group | 0 ... 255 | Yes | 0 – Request is polled separately, no grouping |
| 1... 255 – Request is polled among with other requests belonging to the same group number | |||
| Scale | Any value | Yes | Scale factor applied to the value before storing to DA |
| Offset | Any value | Yes | Offset applied to the value before storing to DA |