6-13
Primer: S7-300 Programmable Controller, Quick Start
C79000-G7076-C500-01
Network 8: Timer start for yellow phase delay for vehicles
M0.0
T3
S5T#6S
T4
??.?
??.?
S_ODT
S
TV
R BCD
Q
BI
Network 9: Red phase for pedestrians
M0.0 Q0.0
M0.0
T2
T3
Network 10: Timer start for red/yellow phase for vehicles
M0.0
T4
S5T#3S
T5
??.?
??.?
S_ODT
S
TV
R BCD
Q
BI
Network 11: Timer start for green request delay
Q0.7
S5T#1S
T6
??.?
??.?
S_ODT
S
TV
R BCD
Q
BI
Enter the LAD elements below for the TLIGHT sample program in your
OB1. Proceed as described in the table on the previous page.
Network 1: FC1 call for traffic light control
??.?
FC1
EN ENO
LAD Elements for
OB1
Programming Logic Blocks with STEP 7
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