ni-3100 I/O sticking
Just got a service call from a customer. They have a system where the ni3100 has door position sensors connected to the i/o ports to give info on partiton status. It is. Large conference/ballroom that can be broken up into 5 small rooms. We just replaced both ni units as they were having the issue with the rs232 capacitors. Now we have an issue (only happened once so far) where regardless of the sensor state, the controller things the i/o I closed. The only thing they could do that clearedit was pull power to the NI. Once it powere up again, it reflected the correct state. I have only seen this once before at a different site. Has any one else seen this? Any thoughts on a soluton other then hardware replacement?