“The amount of retained data has reached 80% of backup memory. You will soon exceed the size of retained data” - Why is Control Expert showing this warning when I try to build my M340 project?


27 February 2023

This warning will occur if the amount of saved data exceeds 80% of data memory available on the M340 (256 Kbytes). The amount of Memory available in the Memory Usage screen will be less than 20%. The only way to reduce this is to delete unused variables, DFBs and EFBs.

Memory usage