Siemens SIMATIC S7-200 System Manual page 190

S7-200 Programmable Controller System Manual
Figure 6-33 Convergence of a Control Stream
Example: Convergence of Control Streams
176
State L
State N
Network 1
LSCR S3.4
Network 2
LD V100.5
SCRT S3.5
Network 3
SCRE
Network 4
LSCR S6.4
Network 5
LD C50
SCRT S6.5
Network 6
SCRE
Network 7
LD S3.5
A S6.5
S S5.0, 1
R S3.5, 1
R S6.5, 1
State M
Transition Condition
//Beginning of State L control region
//Transition to State L'
//End of SCR region for State L
//Beginning of State M control region
//Transition to State M'
//End of SCR region for State M
//When both State L' and State M'
//are activated:
//1. Enable State N (S5.0)
//2. Reset State L' (S3.5)
//3. Reset State M' (S6.5)