7-4 8 SERIES PROTECTIVE RELAY PLATFORM – COMMUNICATIONS GUIDE
INTEROPERABILITY CHAPTER 7: IEC 60870-5-103
Interoperability
Physical layer
Electrical interface
Optical interface
Transmission speed
Link layer
There are no choices for the Link Layer.
Application layer
Transmission mode
for application data
Mode 1 (least significant octet first), is used exclusively in this companion standard.
Common address of
ASDU
Selection of standard
information numbers
in monitor direction
Table 7-3: System functions in monitor direction
⊠ EIA RS-485
32 Number of loads for one protection equipment
□ Glass fibre
□ Plastic fibre
□ F-SMA type connector
□ BFOC/2,5 type connector
⊠ 9600 bits/s
⊠ 19200 bits/s
⊠ One COMMON ADDRESS OF ASDU (identical with station address)
More than one COMMON ADDRESS OF ASDU
INF Semantics
⊠ <0> End of general interrogation
⊠ <0> Time synchronization
⊠ <2> Reset FCB
⊠ <3> Reset CU
⊠ <4> Start/restart
⊠ <5> Power on
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