Pneumatics programming help needed

[madz]

Thank you again. Removing the code in the false case fixed the problem.

I have another question, though. Is there any way to use a read switch to stop the cylinder in a middle position (someplace between fully open and fully closed)? The manual says its not recommended, but has anyone got it to work? If so, do you have any code examples you can share?

[Alan Anderson]

Originally Posted by madz

Is there any way to use a read switch to stop the cylinder in a middle position (someplace between fully open and fully closed)? The manual says its not recommended, but has anyone got it to work?

You can't really "stop" a cylinder at an arbitrary middle point. There are three-position pneumatic cylinders, but they are three specific positions.

It is possible to remove pressure from both sides of the cylinder so that it isn't being pushed to one side or the other by the air. At the same time, however, it isn't going to resist being moved by external forces.