Eaton DC1-124D1FN-A20N - Modbus: Register Mapping

7 Serial interface (Modbus RTU)
7.3 Operating mode Modbus RTU
DC1 Frequency Inverter 10/12 MN04020003Z-EN www.eaton.com 147
7.3.3 Modbus: Register mapping
Register mapping makes it possible to process, in DC1 frequency inverters,
the contents in the following table via Modbus RTU.
7.3.3.1 Input process data
The input process data is used to control the DC1 frequency inverter.
Group ID range Assignment of the ID numbers
Mode parameter 129 - 175 List of parameters Table 12, page 93
Input process data 1 - 4 ￫ Section 7.3.3.1, „Input process data“, page147
Output process data 6 - 24 ￫ Section 7.3.3.2, „Output process data“, page149
￫
The interface driver in certain controllers (e.g. PLCs) may have
an offset of +1 for Modbus RTU communications
￫
The decimal point is not taken into account when processing
values!
For example, if the motor current (ID 8) shown on the DC1 fre-
quency inverter’s display is 0.3 A, it will be transmitted as
003
dez
via Modbus.
ID Designation Scaling Factor Unit
1 Field bus control word – Binary code
2 Field bus speed reference value 0.1 Hz
3
reserved –
4 Modbus ramp time 0.01 s