Hello,
I have seen the several existing topics on PLC retain/persistent memory. I am trying to clarify the following:
1. How to check total Retain only and Persistent data is within limits whilst developing application offline (before having hardware to check memory usage). I understand the configurable PLC Persistent/retain limit on the core to be maximum 115(118)kB for both Persistent and Retain data. However the application compiles OK when having 115kB PERSISTENT RETAIN and 115kB RETAIN only (e.g. 230kB in total). I assume when you download application to the core you will then get an out of memory error. Is there anyway to check total retain only and persistent will be within hardware limits in your offline PLC project?
2. A colleague has asked for support on similar topic... With project below if only 624 bytes of retain data are used why is this shown as nearly 95% (5% spare space)? Similarly with the persistent data if onlt 256 bytes then why does this take so much memory (37% (63% spare))?
Many Thanks