Example implementation for PnozMulti2 usage without EmergencySwitch AddOn available?

[florrens]

The PnozMulti2 comment for the EmStopEventClass parameter contains a hint regarding missing software actions if the PnozMulti2 is used without the EmergencySwitch AddOn.

Is there a good example implementation available for PnozMulti2 usage without EmergencySwitch AddOn?

[SteffenR-]

Best way would be, if you have a signal "Control On" and use the falling edge for a cancel (this is what the ControlOn add-on does).

Alternatively this code should work (not tested):

IF( _cancelSet )
THEN
  // Cancel must be reset in the same way like Execute
  Station.Unit.Cancel := FALSE;
  _cancelSet := FALSE;
END_IF

_emStopR(CLK := PnozMultiAddon.OutImm.EmStop);
IF( _emStopR.Q )
THEN
  Station.Unit.Cancel := TRUE;
  _cancelSet := TRUE;
END_IF

But the signal is flickering during emergency stop which causes many Cancels with the code above:

You could try to add a TOF to avoid the flickering.

[florrens]

Thank you for the suggestion Steffen! I decided to use the inverted K910 signal from the PnozMulti2 which seems to be more stable. To be able to feed the  rEmergencyStop input of the StationLamp addon I introduced an own flag EmStopActive.

I am currently testing this solution and will feedback after I can confirm it works reliable.

[florrens · Accepted solution]

This is the code I am using now and it is working for me. BinIo._K910 is the signal from the pnozMulti (/// K910 emergency Stop i.O. and bus runs / monitoring compressed air i.O. [PLC input])

// {{{ ---- set global signal emstop active
OutImm.Safety.EmStopActive := NOT BinIo._K910;
// }}} ----

// {{{ ---- set cancel if emstop is activated
IF( _cancelSet )
THEN
// Cancel must be reset in the same way like Execute
Station.Unit.Cancel := FALSE;
_cancelSet := FALSE;
END_IF

_emStopR(CLK := OutImm.Safety.EmStopActive);
IF( _emStopR.Q )
THEN
Station.Unit.Cancel := TRUE;
_cancelSet := TRUE;
END_IF
// }}} ----