Experiment # 10
Forward and Reverse Motor Control using PLC
Objective:
Make ladder logic to control the motor in forward and reverse direction using PLC Programming with limit
switches as sensors.
Theory:
The Workpiece starts moving on the left side and moves to the right when the start button is pressed.
When it reaches the rightmost limit, the drive motor reverses and brings the workpiece back to the leftmost
position again and the process repeats.
The forward and reverse pushbuttons provides a means of starting the motor in either forward or reverse so that
the limit switches can take over automatic control.
Motor Forward and Reverse Control

Program Description
RUNG 0000
Latching rung to operate the system through Master Start and Stop PB.
RUNG 0001
When the workpiece is near Limit switch1, It will enable forward motor, for latching forward Motor is
connected in parallel with limit switch 1.
Forward Pushbutton (PB) is also connected in parallel to manually operate forward motor.
RUNG 0002
When the workpiece is near Limit switch2, It will enable reverse motor, for latching reverse Motor is connected
in parallel with limit switch 2.
Reverse Pushbutton (PB) is also connected in parallel to manually operate Reverse motor.

OUTPUTS:

CONCLUSION:
Activity Name 
Exp #10
Group No. 
Student Roll No. 
No.
C
L
O
P
L
O
Domain +
Taxonomy Criteria Awarded Score (out of 4 for each cell)
1 3 5 P3
An ability to Select and apply appropriate
techniques, resources, and modern technology
and IT tools, including prediction and modelling,
to broadly-defined Engineering Technology
problems, with an understanding of the
limitations.
- - - - - - - - -
Total