System parameters

Here you can unpack the complete PLC sources: TutorialSample.zip

The common ASDU address and the user functions of the controlling station are configured via the system parameters.

In our introduction we configure the following system parameters:

• The common ASDU address is set to 7. (asduAddr)
• Logging of debugging messages in the application log is activated (dbgMode). Logging of device state changes is enabled.

Add the following PLC code to your PLC project:

IF init THEN
    init := FALSE;
...


    client.sysPara.asduAddr := 7;
    client.sysPara.dbgMode := IEC870_DEBUGMODE_DEVSTATE (* IEC870_DEBUGMODE_ASDU OR IEC870_DEBUGMODE_LINKERROR OR IEC870_DEBUGMODE_LINKLAYER *);

...

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

END_IF

The documentation for all system parameters can be found here: ST_IEC870_5_101SystemParams.