Omron SYSMAC CX-Programmer 8.1, Operation Manual

Page: 76 / 154

Elements of SFC Section 2-3
60
Administering Convergences
If a step before a convergence is in the active status and its transition conditions are
met, the active status will be transferred provided that the step after the transition is
currently in the inactive status.
Procedures:
Adding a Convergence
Right-click a transition and select Add Convergence . Right-click an existing
convergence and select Connections - Add Connection , or right-click and select
Connections - Add Connection to Convergence .
2-3-6 Simultaneous Sequence Divergences
A simultaneous sequence divergence is a program control structure for SFC, in which
two or more steps are connected after a single transition.
A simultaneous sequence divergence is represented by two horizontal lines.
A single step is branched into two or more steps, which are made active at the same
time.
Step 3 Step 4
FALSE Trans2
Administering Simultaneous Sequence Divergences
If a step before a transition is in the active status and its transition conditions are met,
the active status will be transferred to all the steps after the divergence at the same
time, provided they are all currently in the inactive status.
Following the transfer, all the steps immediately after the double line are
simultaneously made active, and are executed in order from left to right.
Procedures:
Adding a Simultaneous sequence divergence
Right-click a transition and select Add Simultaneous Sequence Divergence . To
make a simultaneous sequence divergence with three or more branches, right-click an
existing simultaneous sequence divergence, and select
Add Simultaneous Divergent
Step Branch to add a branch.
2-3-7 Simultaneous Sequence Convergences
A simultaneous sequence convergence is a program control structure for SFC, in
which a single transition is connected after two or more steps.
A simultaneous sequence convergence is represented by two horizontal lines.
A simultaneous sequence convergence merges a process flow, which has been split
into two or more process flow (i.e. by a simultaneous sequence divergence).