Downloading a logic solver may result in a value and/or status change of non-secure parameters. The effect on production depends on what the references for the non-secure parameters are used for.
The CHARMs Smart Logic Solver (CSLS) supports only total downloads. You cannot download individual SIS modules or LS CHARMs.
CRCs are maintained for the CHARM I/O configuration, each SIS module, and the overall configuration. When a download results in a difference to the overall CRC you are prompted that a download change was detected and that a full functional test of the SIF may be required. You can then check the SIS module and I/O CRCs to determine if a functional test is really required and what the scope of it may be.