Iec 60870-5-103 Protocole; Physical Layer; Application Layer - Fanox SIL A Manuel D'utilisation

11. IEC 60870-5-103 PROTOCOLE

This section describes the protocol IEC 60870-5-103 implementation in the unit.
9.1.

Physical layer

Electrical interface
X RS-485
32 Number of loads for one protection equipment
Transmission speed
X 4800 bits/s
X 9600 bits/s
X 19200 bits/s
X 38400 bits/s
Transmission parameters
Data size 8 bit
parity EVEN
Stop bits 1
9.2.

Application layer

Transmission mode for application data
Mode 1 (least significant octet first), as defined in 4.10 of IEC 60870-5-4, is used
exclusively in this companion standard.
The following functions are supported:
• Initialization
• General Interrogation
• Synchronization
• Commands transmission
Information in monitor direction:
<1>:= time-tagged message
<2>:= time-tagged message with relative time
<3>:= measurands I
<5>:= identification
<6>:= time synchronization
<8>:= general interrogation termination
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