...I'm thinking...

I have been checking the system hardware like cards etc. one of my colleague thinks that there is some problem in the back plane of the controller.

What do you mean by "A back plane of the controller"? Do you mean the mother board? If so, you can dissasemble the whole box to look for bended pins or cold solder joints, but I don't believe that would be the problem, these are pretty good quality equipment, anyway you can give it a try, you got nothing to lose.

One other thing I was thinking of is this:

Now that you know how to remove and reload again all the information, we can try to write a new and short plc program (Just for testing purposes) and see what happens, there is a pretty small chance that your plc backup program has been missing something like a final in-site tune-up.

I will look over your actual program and see what I can do.

I dont know about step 5 programming.I will be looking forward for a short PLC test program from you.I hope you have checked the PLC program.

When you were doing the overall reset process, do you remember looking at an option in the screen that said something like "load basic plc program"?

Let me explain this a little bit:

Back in those years Siemens used to preload a sample plc program, that is, when you were comissioning your new Sinumerik, after the format memory process, you could call this plc sample program (for testing purposes), then you could set the plc status in "run" by means of the PG function and the plc would RUN, altough the machine remained in emergency status for safety reasons and being just a sample program, you could actually notice it was being processed.

But I'm not sure if your machine has this in the plc side of your control.

If you remember seeing this option we can try it as a test, if you don't, then we´ll have to write a new different sample program.

I dont have the sample program in my machine. I think you can help me by writing one.

When can I expect a sample program from you.

Been a little too busy last few days but almost ready now, do you happen to have a list of inputs/outputs for your machine?

I guess the plc program that you uploaded the last time doesn't include any text regarding I/O's.

Please see the attached file of inputs and outputs.

Attached Files

New Microsoft Word Document.doc (131.5 KB, 3 views)

Ok I've got it, let me work on it and will get back to you in a couple of days with a simple, very small test program for your machine.

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