Link Layer; Application Layer - GE 350 Communications Manual

CHAPTER 2: RS485 INTERFACE
Electrical interface
Optical interface
Transmission speed

Link layer

Application layer

Transmission mode for application data
Common address of ASDU
Selection of standard information numbers in monitor direction
SR3 SERIES PROTECTIVE RELAY PLATFORM – COMMUNICATIONS GUIDE
⊠
EIA RS-485
32 Number of loads for one protection equipment
□
Glass fibre
□
Plastic fibre
□
F-SMA type connector
□
BFOC/2,5 type connector
⊠
⊠
There are no choices for the Link Layer.
Mode 1 (least significant octet first), is used exclusively in this companion standard.
⊠
One COMMON ADDRESS OF ASDU (identical with station address)
More than one COMMON ADDRESS OF ASDU
Table 2-4: System functions in monitor direction
INF
⊠
<0>
⊠
<0>
⊠
<2>
⊠
<3>
⊠
<4>
⊠
<5>
Table 2-5: Status indications in monitor direction
INF Semantics
□
<16> Auto-recloser active
□
<17> Teleprotection active
□
<18> Protection active
□
<19> LED reset
IEC 60870-5-103 SERIAL COMMUNICATION
9600 bits/s
19200 bits/s
Semantics
End of general interrogation
Time synchronization
Reset FCB
Reset CU
Start/restart
Power on
3 Series relay
Identifier
3 Series relay
Data Text
2-17