I am working on a stone saw and it has a ge 90-30. I know little about plc's but the screen read once that the plc was not responding. Then I shut the power off and took the power supply module out and plugged it back in and that message went away. Now the touch pad buttons light up but it won't let you engage any functions like raise or lower. I was wondering is any way to access the 90-30 diagnostic from the quick panel display?