Modbus: Register Mapping - Eaton PowerXL DA1 Communications Manual

2 Modbus RTU
2.6 Operating mode Modbus RTU

2.6.3 Modbus: Register mapping

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Register mapping makes it possible to process, in the variable frequency
drive/variable speed starter, the contents in the following table using
Modbus RTU.
DA1
Group
parameter
Input process data
Output process data
DC1
Group
parameter
Input process data
Output process data
DE1
Group
parameter
Input process data
Output process data
￫
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 (Register 8) shown on the
DA1 variable frequency drive's display is 0.3 A, it will be
transmitted as 003
Modbus RTU for variable frequency drive DA1, DC1, DE1 09/16 MN040018EN www.eaton.com
Register
101 - 941
1 - 4
6 - 43
Register
129 - 197
1, 2, 4
6 - 24
Register
129 - 169
1 - 2
6 - 24
via Modbus.
dec