Chapter 6 PLC Programming 125
Input Ports Output Ports
Stop = I:0/0
Red pushbutton (RPB) = I:0/1
Green pushbutton (GPB) = I:0/2
Temperature switch (TSW) = I:0/3
Motor #1 = O:0/0
Motor #2 = O:0/1
White light = O:0/2
Table 6-6. Input/output ports assignments for Figure 6-28.
+120 V
I0
I1
I2
I3
I4
I5
I6
I7
I8
I9
I10
I11
Input ports
Common
O0
O1
O2
O3
O4
O5
O6
O7
Output ports
Stop
RPB
GPB
TSW
M1
Motor #1
M2
Motor #2
White light
W
Figure 6-30. Input/output connections for Figure 6-31.
2. Right-click instruction I:0/1 and click
Force On
from the
shortcut menu
to
force the input instruction I:0/1 to close. Both
outputs should turn on and run continuously.
Right-click instruction I:0/0 and select
Force On
to force the
input instruction I:0/0 to return to its normal open state. Both
outputs should now be turned off.