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Thanks for the reply Bob

Yes, machine is down, Yaskawa has been no help. Looking for a cp4 board to test with. Please any idea would help.

Rick

Axes move in correct direction and they do not jump. Only the display jumps at .328 it will add and then subtract travelling in the same direction.

Problem started with the display would not advance. Program running position display or any of the display buttons would not function until program stop command.
LX2 was sent to Yaskawa for repair....