ABB FENA-01 Protocol Manual page 21

1 DATA OUT 1
For Modbus register maps that include drive parameters, this
parameter specifies which parameter's value will be written to
when the register corresponding to DATA OUT 1 is written by the
Modbus client. Content is specified by a decimal number as
follows.
0
1 - 99
101 - 9999
Parameter numbers are formatted as xxyy, where xx is the
parameter group number (1 to 99) and yy is the parameter index
within that group (01 to 99). For example, parameter 99.02 would
be entered as 9902.
2-12 DATA OUT 2 to DATA OUT 12
See DATA OUT 1 above.
Not Used
Virtual Address Area of Drive. Not used when the
Modbus/TCP protocol is used.
Parameter Area of Drive
21
Drive configuration