A 3
Index
1
SCTM Protocol ................................................................................................................... 5
1.1
Device status in the registration period data block .............................................................. 5
1.2
Register status in the registration period data block ............................................................ 7
1.3
Retrieval of events (spontaneous event buffer : 051-xx) ..................................................... 7
1.4
List of addresses for SCTM ................................................................................................. 8
1.5
SCTM telegrams (subset) .................................................................................................. 34
1.6
Changing between summertime and wintertime................................................................ 35
1.6.1
Switching from wintertime to summertime ......................................................................... 35
1.6.2
Switching from summertime to wintertime ......................................................................... 35
2
IEC 60870-5-102 Protocol ................................................................................................ 36
2.1
Telegram processing ......................................................................................................... 36
2.2
Date retrieval (Periodic buffers Tm1/MP1 & Tm2/MP2) .................................................... 36
2.3
Retrieval of messages (spontaneous event buffer) ........................................................... 37
2.4
Compatibility list ................................................................................................................. 37
2.4.1
Network configuration ........................................................................................................ 37
2.4.2
Transmission speed (control and monitoring direction) ..................................................... 37
2.4.3
Link address (address field of the link layer) ..................................................................... 38
2.4.4
Transmission mode for application data ............................................................................ 38
2.4.5
ASDU address ................................................................................................................... 38
2.4.6
Signature............................................................................................................................ 38
2.4.7
List address (list number) .................................................................................................. 38
2.4.8
Rate information (programmable) ...................................................................................... 38
2.4.9
Selection of standardized ASDU........................................................................................ 39
2.4.10
System information in control direction: request (from the central unit to the DLX) .......... 40
2.4.11
Basic application functions ................................................................................................ 41
3
Modbus RTU Protocol ..................................................................................................... 42
3.1
Telegram processing ......................................................................................................... 42
3.2
Telegram structure ............................................................................................................. 42
3.3
Modbus register addresses ............................................................................................... 43
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