I'm very excited to announce that with the update the GX Works3 version 1.095Z and firmware 1.290, Online Program Changes are now possible in SFC programming on the FX5U and FX5UC PLCs.

We have had the ability to program SFC on the FX5U/FX5UC PLCs for a while now, however if you needed to do a program change it required you to stop the PLC and rewrite the entire program.  With this new update you can use the standard Online Change capability to update your SFC code without having to stop the processor.  This is a huge advancement and helps to dramatically reduce program development times.