first time poster but been here many a time directed by google search.
Have a mitsubishi Melesec Q series plc with a Q00JCPU that has lost its code. We use gx iec developer and i have version 6.10,7.0,7.01,,7.04 on my laptop. We have a back up PCD file for the plc but when i restore it, it shows it was installed with gx iec v 6.01. I restored it with version 7.04 and it says needs to be updated and it goes through that process. When i REBUILD ALL it has zero errors 200 warnings but lets you rebuild the code.
Downloaded to plc and doesn't go back into run mode without going into the start/stop plc to give it a kick and then it willl go into run mode. Shows no errors on diagnostics and you can look through the POU logic and all the program is there and you can go into monitor mode and see inputs/outputs changing, problem is none of the analogue input or output modules are working.
None are showing in fault and you look at system monitor and it displays all the modules we have in the rack. in the parameter file under IO there is nothing in the switch settings so i selected each module in there then the switch settings for intelligent(analogue) modules all showed 0000000000000000. Still no analogue input /outputs working, put a current source on some of the AI but no change to 0.00 reading on HMI and on the AO not even getting 4ma.Tried to restore with v6.10 of the software but rebuild all fails half way through no matter what limits you set for errors and warnings. comes back with 20 errors 40 warnings.
i connected with gx works 2 and read from plc and in the section where you can choose what you read/wrtie from plc it has the program 7.0 as not compiled and wont let you rebuild it and it shows parameters v 6.0
spoke to mitsubishi support and of course they said it should work no problem with v7.0 after it updates it. Looks like we need v6.01 should have a copy of that in next day or 2.
Any thoughts on this and advice on anything I can do to get it working?