PLC Panel Testing

Surely you don't expect much of an answer to a question with so little detail, do you?

The obvious answer is yes--is there some reason you'd argue that they shouldn't be tested that way?

If you really want to know how to test a PLC panel read this http://www.barn.org/FILES/historyofplc.html The History of the PLC as told to Howard Hendricks by Dick Morley, Dick was the father of the PLC.

I've worked on some of his early stuff, it was built like a tank.

Thanks Tony, would love to see photos of them too. The auto-pilots in the B52's were analog with tubes, E2 1966, i suppose they were PLC's in a way

There were no tubes (valves in the UK) in any of the Modicon PLC's, just 3 massive cards. I once tried to make one good unit out of two failed units. I gave up! The first ones I worked with were the 384, the programming panel weighed over 70lb, nice and portable to carry around the plant. Texas Instruments used the same type of programmer, I fell down a flight of stairs carrying one, afterwards I just plugged it in and used it. As I said "built like tanks"

Well, a PLC panel is supposed to be turned on all the time, so it's difficult to see what a 48-hour test would achieve.