Posted 12 Oct 2017 Need Help! I uploaded structured ladder program into FX3S PLC. But When I try to read it from PLC it says the program cannot be opened. Share this post Link to post Share on other sites
Posted 12 Oct 2017 The structured program can't be downloaded into an FX3S only the PLC code. But you should be able to upload that and open it 1 person likes this Share this post Link to post Share on other sites