I am using a PMAC2 PC104 card. We are controlling two servo axes. The system has several PLC's, PLCC's and a motion program running. Most of the time the application performs well. Usually once in an 8 hour shift the controller will perform some of the I/O operations out of sequence, for example turning on an output, not the same one or at the same time all very random. I was wondering if anyone had seen this before. I am leaning toward resetting the device with a $$$*** and reloading all programs, maybe a program buffer corruption error. I would appreciate any advice from anyone that has seen this before. We have used Delta Tau for years running different variations of this same program, usually they are rock solid.