ABB RET 54 Series Technical Reference Manual, General page 80

RET 54_
80
Transformer Terminal
Technical Reference Manual, General
Modbus master
RS232C
RS232 / Isolated RS485 converter.
Two or four wire connection.
Modbus
REX 52x
REX 52x
REX 521
CAP 501
CAP 505
RE_ 54_:
RER 133 connected to X3.2
RER 103 connected to X3.3
Fig. 5.1.13.10.-7 Modbus- and LON-based substation automation system
to NCC
Modem
SMS 510
RER 133 RER 133
I
I I
0
0 0
F
F F
C
C C
E E E
RER 103
RER 103
REF 54_ or RET 54_
LON for e.g NV bindings, parameters, configuration
1MRS755225