Thanks Dave for your thoughts.

The MTBF-factor is of course a hard caught animal, I guess I have at  
least two objectives with a project like this:
1) Try to make it run by repairing it or work around it's faults.
2) Treat it as an self educational exercise aiming at more modern  
machines and controls.

This could done I guess, on another machine machine but if we decide  
to refurbish it with a new control it's good to dig inte a working  
system because  somewhere you have to cut the wires between the  
control and the machine.
Get acquainted with the system is a good thing to do if it's  
possible, right?
I can observe the behaviour of the switches in the diagnosispage and  
I think this is a great way to find out how it works, by observing  
it's various parameters in action.
You may also monitor the signals on the physical wiring when the  
system is running making use of  logic analyers, oscilloscopes and  
multimeters.
Yes, I have a background in repairing electronics, analogue and  
digital, the analytical way.
Nonetheless, it still may turn out to be too cumbersome so doing this  
on a more modern system should probably be a better investment.
I'll talk to Johnny about this.

Greetings  / Roger








25 mar 2012 kl. 21:13 skrev emc-users-requ...@lists.sourceforge.net:

> I looked at the Siemen website and they only go back to the Sinumerik
> 8T.  I've deal with some of the hardware that the 8T used and it was
> very difficult to make that
> hardware reliable.  Unless you can get that control to operate  
> properly
> and find documentation (unlikely) I'd replace it.
> I've spent days working on old controllers like that and sometimes  
> they
> end up working ok for a while, but when you are done, the best you  
> have
> is a very old control that is living on the edge.  If it goes down, it
> tends to stay down and simply become a time eater.
>
> Dave

-----------
abCNC
-----------
Roger Holmquist
Bockarp villa Tallebo
59592 Mjölby
+46-706-250123
+46-768-788477
+46-142-20542
ro...@abcnc.se
http://abcnc.se





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