6-16
Primer: S7-300 Programmable Controller, Quick Start
C79000-G7076-C500-01
Enter the FBD elements listed below for the TLIGHT sample program
network by network in your FC1. Proceed as described in the table. You have
already defined the required addresses in Chapter 2 of the Primer.
Network 1: Detecting green request for pedestrians
M0.0
>=1
&
I0.0
I0.1
T6
M0.0
>=1
&
T5
=
Network 2: Green phase for vehicles
M0.0
& =
Q0.7
Network 3: Timer start for yellow phase for vehicles
S5T#3S
T2
M0.0
??.?
???
???
S_ODT
S
TV
R
BI
BCD
Q
Network 4: Yellow phase for vehicles
>=1
T4
T2
M0.0
Q0.6
&
=
Network 5: Red phase for vehicles
M0.0
Q0.5
&
=
T2
Network 6: Timer start for green phase for pedestrians
S5T#10S
T3
Q0.5
??.?
???
???
S_ODT
S
TV
R
BI
BCD
Q
Network 7: Green phase for pedestrians
Q0.5
Q0.1
&
=
T3
FBD Elements for
FC1
Programming Logic Blocks with STEP 7