GE P742

SCADA Communications
P74x/EN SC/N
a7
MiCOM P74
1, P742, P743 (SC) 13-
1
SC
CONTENTS
1. SCADA COMMUNICATIONS 3
1.1 Introduction 3
1.1.1 Read only mode (Command Blocking) 3
1.2 Rear port information and connection advice – EIA(RS)485 protocols 4
1.2.1 Rear communication port EIA(RS)485 interface 4
1.2.2 Courier communication 6
1.2.3 MODBUS communication (not available) 8
1.2.4 IEC60870-5 CS 103 communication 8
1.2.5 DNP3.0 communication (not available) 10
1.3 Second rear communication port (SK4) 10
1.4 Ethernet communication 11
1.4.1 Legacy protocols 11
1.4.2 IEC 61850-8.1 protocol 12
2. COURIER INTERFACE 14
2.1 Courier protocol 14
2.2 Supported command set 14
2.3 Relay courier database 15
2.4 Setting changes 15
2.4.1 Setting transfer mode 15
2.5 Event extraction 16
2.5.1 Automatic event extraction 16
2.5.2 Event types 16
2.5.3 Event format 16
2.5.4 Manual event record extraction 17
2.6 Disturbance record extraction 17
2.7 Programmable scheme logic settings 17
3. IEC 61850 ETHERNET INTERFACE 18
3.1 Introduction 18