Area length Error when writing
I have the following error on a 317F -3 PN/DP Siemens PLC with the SF light Solid Red:
Area length Error when writing
Global DB, bit access, Access Address: 7
Requested OB: Programming Error OB (OB121)
Priority Class: 1
Internal Error, Incoming 1.
Which address is it referring to when it says Address 7? I cannot find the DB in question. Hoping someone here can shed some light.
What I have tried so far.
Stopping the PLC and Checking the Stacks Tab Shows DB122, DB27 FC27 And FB27. Double clicking FC27 brings me to Network 4. Which I temporarily deleted to check if the fault disappears with no luck. I then blocked calls to all of these but I cannot find the root DB for the write error. I also tried to download the blocks back with an offline project (backup) thinking it might be a corrupted download but that did not solve anything.
I started to block all FC calls in OB1, 1 at a time to check if it was something there. But I cannot find the root cause for this.
Any help would be appreciated !!!!
