AB 1.2 download.sdb error 35
In running plant , PM583 plc when I changed somesomething in logic like very small changes and download in plc that time download.sdb error 35 is coming and last online not executed correctly and codesys going offline. And again i am downloading the program that ttime showing pop up like no program In controller.
Its very danger for Food Industries (Milk Pasteriser System) bacouse 2-3 time Milk was mixup with Water.
After ANY modification in your program, you have to download the project to the PLC, prior to Online / Login is possible.
During download usually the program is stopped for a while, you have to take that in consideration and ensure that is safe for the process.
Don't forget to execute Create Boot Project after the download.
Do you use Clean All option?
Look for 'Online' 'Login' in Codesys help.
Source: Codesys help
I have experienced the same and it is very bothersome when downloading program to a PLC while the process is running.
I have mostly experienced this while downloading to AC500 HA PLCs.
Some suggestions are as below.
1) Make sure you are not using any sort of network teaming or bridging of ethernet ports to create a redundant link to your PLC (Ex: via CM597). If Yes then use a single network connection.if No then ignore this point.
2) I found it better to perform a Rebuild all instead of only Build, followed by symbol configuration procedure every time I changed the logic. The symbol configuration may be skipped if tags are not deleted or added to the modified program.
3) Once ABB support suggested that this could be a network related issue, which causes the project files to not be downloaded completely into the PLC. When Creating boot project, the procedure fails and the codesys connection breaks. This I believe disrupts the create boot project process and hence the Empty Controller error after restart.
4) Update the firmware from AB2.x .I observed a marked improvement in many aspects when using AB2.x with latest firmware on the PLC and its associated CI modules.