INITIAL SFC STEP FUNCTION (INIT STEP)

This function can be used to set up an operating phase or step for a PLC or a device. The phase corresponds to the initial state of an independent SFC chart. This initialisation takes priority over all the input values of this function. It forces a status token in its step, i.e. forces the associated STEP OUTPUT to ON and deletes the tokens present in the STEP TRANSITION OUTPUT.

If there is no RESET-INIT function in the independent SFC chart, the INIT STEP function is automatically initialised in the following situations:

Outside of this initialisation, the function behaves like a simple step function, i.e.:

The non-connected inputs are set to neutral values for the function, i.e.:

Caution, there must be at least one INIT STEP function per independent SFC chart; equally, there may be several.

Parameterisation box/Comments tab

For more information about SFC charts and this function, see: SFC chart help.

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