Posted 29 May 2021 Hi, My PLC is fx2nc-32MT. When I diagnosis the plc, this error I Found, 6402 Param Error. Please check the attachment Thanks for your Support. Share this post Link to post Share on other sites
Posted 29 May 2021 (edited) Check software version. Check PLC parameters. https://forums.mrplc.com/index.php?/topic/13068-converting-from-fx2-to-fx3u-6402-memory-capacity-setting-error/ Edited 29 May 2021 by Neverov Share this post Link to post Share on other sites