OR DIVERGENCE FUNCTION TOWARD 2
SFC BRANCHES (DIV OR 2)

This function is used to link one or two operating
phases after an operating phase. Two possible phases are available for
selection.
- If a status token is present at STEP INPUT 1 or STEP INPUT 2 it is
stored immediately in the function step, switching the STEP OUTPUT to ON.
- This token remains stored in the step until the TRANSITION 1 and/or
TRANSITION 2 input changes to the ON state. In this case, the status token
crosses the transition(s) and disappears from the step. This causes the STEP
OUTPUT to change to OFF and the token is then available on the DIV OR
TRANSITION 1 OUTPUT and/or TRANSITION 2 OUTPUT (depending on the transition(s)
which have passed) and can be stored in one or more steps connected downstream
of these outputs.
- If there is no status token present at either input (STEP INPUT 1 and
INPUT 2) and if the step does not already contain a status token, the step
remains empty and the STEP OUTPUT is set to OFF.
The non-connected inputs are set to neutral values for
the function, i.e.:
- The non-connected TRANSITION 1 or TRANSITION 2 is maintained in the
OFF state: transition(s) blocked
- The non-connected STEP INPUT 1 or INPUT 2 is maintained with no token
present at the step input.
Parameterisation box/Comments
tab
For more information about SFC charts and this function,
see: SFC chart help.
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