Modbus Remote Communication Protocol - ABB REF 610 Technical Reference Manual

REF 610 REF 610
Event reason
Open CB Command/Reset
Close CB Command/Reset
CB Reclosing Failed/Reset
CB Reclosing inhibited/Reset
AR Cancelled/Reset
5.1.15.
84
Feeder Protection Relay
Technical Reference Manual
Table 5.1.14.-2 Information mapping of configuration set 1 and 2
Measurand
Current I
L1
Current I
L2
Current I
L3
Current I
0

Modbus remote communication protocol

The master/slave protocol Modbus was first introduced by Modicon Inc. and is
widely accepted as a communication standard for industrial device controllers and
PLCs. For the protocol definition, refer to Section 1.4. Product documentation.
The implementation of the Modbus protocol in the relay supports both the RTU and
the ASCII link mode. Both the link mode and the line setting parameters are user-
configurable. The character codings of the link modes follow the protocol
definition. The RTU character format is presented in Table 5.1.15.-1 and the ASCII
character format in Table 5.1.15.-2:
3E13/ X X 169
3E14
3E15/ X X 169
3E16
3E17/ X X 169
3E18
3E19/ X X 169
3E20
3E21/ X X 169
3E22
2.4
2.4
2.4
2.4
1MRS755310
127 - -
128 - -
163 - -
162 - -
130 - -
I X X 135 140
n
I X X
n
I X X
n
I X X
n
1
1
1
1
1
9