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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