MHennel
Member
I have two project sites that have several CPU-319F-3 PN/DP PLC's installed on various material handling systems. In the last two months I have add errors on them were all of the status LED's on the PLC are flashing and there is message in the diagnostic buffer that reads[FONT="] “DEFECTIVE: Internal System Error’ [/FONT] At one site it has happened to all five PLC's at the same time. This has happened twice in the last two month. On another site it has happened to two of the four PLC's but at different times. Here is a screen shot of the PLC version number. Has anyone else had an issue like this