Specifications

SIMATIC Instructions
9-159
S7-200 Programmable Controller System Manual
C79000-G7076-C233-01
Convergence Control
A similar situation arises when two or more streams of sequential states must be
merged into a single stream. When multiple streams merge into a single stream,
they are said to converge. When streams converge, all incoming streams must be
complete before the next state is executed. Figure 9-61 depicts the convergence of
two control streams.
State N
State L State M
Transition Condition
Figure 9-61 Convergence of Control Streams