Hi guys, Does anyone faces this problem before? GXwork2- Simple Project, Ladder Program... -Q61p , Q03UDCPU , QJ61BT11N , QX42 , QY42P , QY41P -Connect to 8 module(AJ65SBTB32-16DR) And i start to upload my PLC program .... Testing & commissioning are DONE..... Everything are fine... After few days later.... there is a Power failure then PLC Program missing , All the PLC input , output missing Error code show Missing Para(2200) i try to recycle power few time ....then the program came back.... everything Back to online.....