Resetting the protection bit

jcnix

Member
Join Date
Apr 2007
Location
Pearl, MS
Posts
1
Anyone ever run into this? A customer's PLC lost an output but the program is protected from "future access" by a status bit. We replaced the brick and rewrote the logic. But the customer says the guy that programed several of their SLC's did the same thing before quitting.
 
Yes, I have seen it and I think it happens a lot. Many insecure programmers use the protection bit for job security, except it never works like that for them. The only results are hard feelings and it insures that the programmer is never employed twice at the same place.
 
...along with insuring that his legacy to the company is completely lost when his software has to be completely dumped rather than simply modified.
 

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