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ladder question


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Another simple problem I believe . . .

I'm turning on a motor, keeping it on for a specified time, then shutting it off.

The thing is, I have to use a function block to turn on the motor (ARCL connection with mobile robot).

So, I'm setting variables MotorOn to activate the timer once the initial function block is complete , and Timer_done to activate the function block to turn off the motor.

This works fine, unless I try to stop the motor before the timer has expired, by turning off the Start_motor switch. In that case, Timer_done never becomes True, so the motor continues indefinitely.

Seems like there should be a fairly simple way to activate the Motor_Off function block when the Start_motor switch is turned off.


Motor activate.png

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