8 -19
Example 3
Pedestrian Crossing Lights
Y4 (Green)
Y3 (Red)
Y0 (Red)
Y1 (Amber)
Y2 (Green)
Y4
(Green)
X0
X1
Input Points:
Pedestrian Push Button X0
Pedestrian Push Button X1
Output Points: Road Red Light Y0
Road Amber light Y1
Road Green Light Y2
Pedestrian Crossing Red Light Y3
Pedestrian Crossing Green Light Y4
M1918=0
Y3 (Red)
Y4 (Green)
X1
Y0 (Red)
Y1 (Amber)
Y2 (Green)
Y4
(Green)
X0