I'm rewriting parameters through communication (CC-Link network converter NETC01-CC to AZ), but when I turn the power back on, the parameters I thought I had changed disappear. Why is that?

Parameters and operation data set on the FA network are saved in the RAM. Parameters and data saved in the RAM will be lost when the 24V DC power supply is cut off.

If you want the settings to be remembered even when the power is turned off, you must save them in the AZ driver's non-volatile memory.

To save them in the non-volatile memory, execute the maintenance command "Write all non-volatile memory".

Please note that there is a limit to the number of times that the non-volatile memory can be written, approximately 100,000 times.