I think you have ladder diagram operator needs both hands to open the machine will begin to change course. This minimizes the possibility of operator cabin area where the machine cycle is started. If either or both of the switches are “locked in”, control does not allow a new machine cycle will begin.

Two hand switch for Allen-Bradley PLC ladder
-Check cycle with Timer count if it is on within 5 sec. when user press.PLC ladder two hand switch

-Check for pallet rotation is in position before allow anti-tie down User.PLC ladder two hand switch

-Determines and memorizeswhether clamp or unclamp will be next for each pallet the next time opto tuch button was pushed.
PLC ladder two hand switch

ladder diagram is not complicated, what is important. This should be enough info to give to the image. Post what you’re trying to get help.

The idea is to create two buttons, usually palm buttons machine that works for some time.
These buttons are physically positioned so that the operator must use both hands to the buttons. The operator is to use both buttons simultaneously to start the course, and they each cycle progresses some of the “safe point” - in other words, if the operator can not physically get their hands (s) of a pinch point. (more…)

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