750-8100 FW22 (E!COCKPIT) was faced with such a problem that visualization does not start, such a message hangs.
This problem could be caused by a pointer error inside the visualization.
finding it will be tedious but you may be able to first do a implicit check on the visu object:
You can also try to enable or disable the “Activate property handling in all element properties”
Also you can try with or without the “Support client animation and overlay of native elements”
Last resort is to gradually remove visu part to see what is the problem …
I tried all these options and I did not succeed. The error arose with nothing. Last night, for example, visualization worked, and in the morning there is already a mistake. What could happen overnight? The program did not change.
Is the PLC program still running or halted?
I’ve experienced this with PLC-programming errors, too many visu-clients (the CPU usage does not reach its threshold, but still cause an exception), cycle time for the Visu-task too low…
The program works and everything is correctly implemented. I connect to PLC without updating the program. Everything is fine. Now I noticed that visualization works again. Yesterday I conducted an experiment and deleted the files/home/codesys_root/plclogic/visu visu.htm and visu.cfg.json
And it helped, visualization began to work.
I have more than 100 files in my folder, can I completely delete all files? Or what is the best way to make this directory to clean from unnecessary files?
The other problem is clearly.
Since visualization works well at night when no one is definitely connected to the PLC.
But when someone connects in the afternoon or something happens with the network, visualization falls. I think this is caused by the number of requests to PLC or requests for visualization.