T4:0
= Motor0 Timer
(Timer)
O:2/1
= Motor1
(Output)
T4:1
= Motor1 Timer
(Timer)
Ladder Diagram for sequential operation of Motors with Interlocking
Program Description
RUNG000 is Latching coil for Master Start and Stop.
RUNG001-RUNG002 and RUNG003-RUNG004 are arrangements to operate Motor0 O:2/0 and Motor1
O:2/1 respectively.
When Start button is pressed momentarily, it latches the coil starting the energizing the output O:2/0, hence
turning Motor0 ON.
Timer T4:0 is used to run Motor0 for 5secs (Less because of simulation purpose).
Similarly T4:1 is used to run Motor1 for 5secs.
While Motor0 is running, and M1 Start I:1/1 is pressed, it stops the Motor0 (O:2/0 de-energizes) and Motor1
(O:2/1 energizes) starts and timer t4:1 is activated. And vice-versa.
XIO contact of each motor’s output is used to turn other motor off by de-energizing other motor’s output
which cuts off the current supply in the field.
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