prohibit movement on external axis DX100

    Is there a way to prohibit movement of an external axis in the concurrent IO? I need to make sure a cylinder is retracted before allowing movement on the axis. Checking it in auto in the program is not the issue. I need to stop the axis from being jogged in teach accidentally when the cylinder is out to keep it from getting broken repeatedly..

    Thanks!!

    Generally, when I have do something like that I use the ONEN hardwired inputs to prevent servo power from coming on that axis.

    A quick down dirty way in the ladder write a rung if in teach and the cylinder isn't retracted and operating put the system into a hold condition or generate a user message or alarm.

    I know a thing or two, because I’ve seen a thing or two. Don't even ask about a third thing. I won't know it.

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