Hi 

I face the same issue too.

i could add upto 9 sensors only to the PLC S7 1212C, when i connect it to the 10th sensor, the same error 8070 pops out

can you please share how you resolved this?

Hamza_18

Hi again, I kept searching around and found out that Error 8070 means all instance memory in use. i don't know how to work arround that since i need 49 instant DB for my Config and another 49 for my MB Master... and since the module can support up to 247 with the use of repeaters, it didn't seem right that i would lag at some point and pop that error up.

And my program works for 14 Slaves so i don't think it was a mistake since 14 does communicate but not more... i saw some people made it to 10 and others to 18, i am really confused on to how do Instance memory works and how come there is nothing on it in this support website.

I reached a very big wall i guess ^^', but that is the analyses i came up with. hope it gives you an idea on how to help me ^^' i could really use that help, if you can of course :)

Thanks.

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Split from 8070 status error.