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Parallel Port breakout boards, motherboards, and dedicated accessories / Rotary axis conflicts with relay K1

« on: February 15, 2019, 08:21:03 PM »

I have a 126 with an ethernet SS  driving the parallel ports. I just added a rotary actuator using port 1 pin 16 for step and port 1 pin 17 for direction. Everything appears operational as did my first cuts this afternoon.  The issue is the Router comes on (controlled by relay K1) when the system powers up and then shuts off after everything is up and running.  I don't have the problem if pin 17 is disconnected. I am running in Normal mode so not using the charge pump. My understanding is that pin 17 is available for motor control under these conditions. What am I missing?

Thanks

Brad