IEC60870-5-101 protocol parameters

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The behaviour of the substation can be adapted to the requirements of the master via the IEC60870-5-101 protocol parameters. Most parameters have preallocated default values that do not have to be changed.

In our example we set the link address and link address octet size:

IF init THEN
    init := FALSE;
...

    server.protPara.linkAddr := 220;(* slave link address *)
    server.protPara.eLinkAddrSize := eIEC870_LinkAddr_TwoOctets; (* link address octet size *)
...

ELSE
    server( pInputs := ADR( inputs ),
        cbInputs := SIZEOF( inputs ),
        pOutputs := ADR( outputs ),
...

END_IF

The documentation for all transfer protocol parameters can be found here: ST_IEC870_5_101PotocolParams.