on OB122_MEM_AREA i read B#16#30

Can someone help me identity the area and access type this is indicating?

Dear

Please check IW72,76 is not in hardware

but used in program

https://support.industry.siemens.com/cs/mdm/109755202?c=58227414283&lc=cs-CZ

Thanks

Shailesh

I have already checked all this before hand, the addresses meantioned in the log is not assigned to any input on any module and never was. They are not used in the program in anyway. 

OB122 documentation doesnt fit with what MEMAREA returns.This is why im trying to understand the OB122 temp value holding the memarea. B#8#30 as binary doesn't seem to make sense according to documentation on OB122. This would indicate "NO AREA" and both WORD and DWORD types at the same time? This makes no sense at all. (00110000)

I suspect a faulty cpu, but im reaching out here hoping someone understands OB122 in depth and can tell me what area the machine is trying to indicate as faulty when reading.

Or maybe someone can tell why theres an io read error on an address that is not utilized in the program, nor is it assigned to anything anywhere.

Worst case scenario, theres a pointer hidden in the program somewhere, that somehow moved outside of the p-area.

This looks like nonsense to me.

MEMAREA returns = 00110000

----

Documentation on MEMAREA:

• Bit 7 to 4: Access type
  • -0: Bit access
  • -1: Byte access
  • -2: Word access
  • -3: DWord access
• Bit 3 to 0: memory area
  • -0: I/O area
  • -1: Process image input
  • -2: Process image output

Or am i suppose to read it like this?

0011 = 3

0000 = 0

Wich means 3 is Dword and and 0 is IO area according to documentation?

I understand that part, i just wanted to understand the specific data that OBB122 has been fed, in accordance with the documentation siemens provides.

But thank you for clearing that up, this means its not a faulty CPU, but rather a pointer some where. I guess ill just have to scout through the entire program.

Any advice is welcome.