Dropping output

    Is there a way to turn an output off if someone breaks the safety fence? I know how on a Motoman by manipulating the ladder but I’m lost on a fanuc

    This is how we have done it through the plc program the input of the light curtain being broken in the plc you assign to a fanuc digital output your going to need to use a calculator for Hexadecimal ex 8a=138 so when you look at your digital out puts on the pendant D/O 138 would trigger on and off while being broken

    Yeah we’re just going to wire a some relays. It’s a R-J3ib controller and we can’t get the gun trigger to shut off when a fault occurs. I would run it in the bg logic but it won’t let me use IF THEN statements.

    You can easily do that in BG Logic.


    You can use if statements in BG Logic but it must be the mixed logic version with parenthesis.


    If (conditions), DO[x] = Off.


    If you want it to auto resume then I would use a separate flag to turn it on in the program. Then your BG Logic can be like this:


    DO[x] = F[x] And Fence.



    If the mixed logic if statement isn't available then you can use second example and it will work fine.

    The gun triggers turned on and off like we wanted but after a little while the bg logic faulted out for digital port access fault and wouldn’t reset until we took out the logic that was controlling it. We’re just going to add a couple relays to fix it. Not sure if it’s anything to do with the fact that is a R-J3iB controller or not.

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