ABB RET 541 - 10 Appendix A: the IEC 60870-5-103 Bus; Functions Supported by the RET 54

108
1MRS755225
Transformer Terminal
Technical Reference Manual, General
RET 54_
10. Appendix A: The IEC 60870-5-103 bus
Fig. 10.-1 Example of the physical connection of the IEC 60870-5-103 control
system
10.1. Functions supported by the RET 54_
RER 103
RER 103
RER 123
RER 123
SMS
IEC 103 Master
RER 123
RER 103
RER 125
SPA-ZC 22
RS232C
SMS-SPA_IEC_b
C
E
F
I
0
C
E
F
I
0
C
E
F
I
0
SPA-ZC 22
RE_ 54_:
RER 123 connected to X3.2
RER 103 connected to X3.3
Fiber optic modem
REF 54_ or RET 54_ relays
Function
Function
code
Comment
Reset CU 0 Replies with the identification string
User data 3 • GI command
• time synchronization (unicast)
• application control commands
Broadcast 4 Time synchronization only
Reset FCB 7 Replies with identification string
Request Access Demand 8
Request Status of Link 9
Request Class 1 Data 10
Request Class 2 Data 11