Hi, I have Logo! 8 FS6 and FW version 1.81.03

All works fine but through S7 communication I cannot read/write to variables from VM 275 to 485.

This area is for S7 communication absolutely death. Does anyone have an idea where the problem might be? 

Thanks

Carlos

carlosovo

I cannot read/write to variables from VM 275 to 485.

This area is for S7 communication absolutely death. 

 Hi, What does this mean and how have you checked?

As other areas work, your configuration for the S7 communication is fine. Maybe the memory is used by parameter you cannot change?

I use for different communication parts normaly a distance in the memory of 100 and everything works fine.

Please post your LOGO! program as zip, so we can check it.

Hi, sorry for my bad language but I will try to explain it.

I have 6 logo in multi master connection (0BA7 and 0BA8.0) I communicate with them through the S7 protocol without problem. Now I want to add another (seventh) logo. It is 0BA8.1FS6 and FW version 1.81.03. But only on this new one (Logo 0BA8.1) is through S7 communication area from VM 275 to 485 death.

New finding:

When I exchanged this Logo 0BA8.1 for another next Logo8 but 0BA8.0 (with the same IP address, same configuration and same software) ALL WORKS FINE. It looks like some problem only on Logo 0BA8.1

Therefore, it is possible to upgrade the FW? Probably is possible upgrade V1.81.03 only to V1.81.04. Is it TRUE??

Thanks

Carlos