small free work memory simatic s7

putiss

Member
Join Date
Sep 2015
Location
Czech Republic
Posts
54
Hi all,
I'm solving problem with 1214C cpu and too small free work memory (about 4%]. Solution will be rewrite user program to smaller or change cpu.

But my question is - does anybody experience with small free work memory and consequencies?
This cpu sometimes lost plc-hmi communication and other io-devices, after power reset ok. Could be due to memory problem?o_O

Thanks in advance
 
The HMI communication should not be related to the available memory.

Low free memory can mean that you cannot load modified blocks. You may have to delete the old block before loading the new block. That in turn means that the CPU must be in stop, no program change when in run.
 

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