Figure 186: Edition 2 System - Backward Compatibility; Figure 187: Edition 1 System - Forward Compatibility Issues - GE P4A Technical Manual

P54A/B/C/E
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Figure 186: Edition 2 system - backward compatibility

An Edition 2 IED cannot normally operate within an Edition 1 IEC 61850 system. An Edition 2 IED can work for
GOOSE messaging in a mixed system, providing the client is compatible with Edition 2.
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Figure 187: Edition 1 system - forward compatibility issues

7.4.11.2 EDITION-2 COMMON DATA CLASSES
The following common data classes (CDCs) are new to Edition 2 and therefore should not be used in GOOSE control
blocks in mixed Edition 1 and Edition 2 systems
Histogram (HST)
●
● Visible string status (VSS)
Object reference setting (ORG)
●
Controllable enumerated status (ENC)
●
Controllable analogue process value (APC)
●
Binary controlled analogue process value (BAC)
●
● Enumerated status setting (ENG)
Time setting group (TSG)
●
P54xMED-TM-EN-1
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