Siemens Simatic S7-200 System Manual page 283

The divergence of control streams can be implemented in an SCR program by using multiple
SCRT instructions enabled by the same transition condition, as shown in Figure 10-41.
Network
Network
. . .
Network
M2.3
Network
Figure 10-41
S7-200 Programmable Controller System Manual
C79000-G7076-C230-02
LAD
S3.4
Beginning of State L
SCR
control region
I2.1
S3.5
Transition to State M
SCRT
S6.5
Transition to State N
SCRT
End of SCR region for
SCRE
State L
Example of Divergence of Control Streams
Instruction Set
STL
Network
LSCR S3.4
Network
. . .
Network
LD M2.3
A I2.1
SCRT S3.5
SCRT S6.5
Network
SCRE
10-95