Cannot login-Reservation of Controller failed
During getting online is shown message "Warning! Reservation of Controller failed. THe application/controller cannot be downloaded. Download not possible since the following controllers are stopped or occupied" The controller is neither stopped not occupied (or at least not actively - I cannot know if the last connection was correctly finished or not). How can I get rid of this? Possible without restarting PLC?
Thanks.
Tomas Fibir
Thanks.
Tomas Fibir
Answers
Boot the engineering station and refresh project
Check Control Builder Session Logs
Right Click Controllers and "Show Remote Systems" - Check the loaded applications
Check the controller logs
Can the OPC Servers save the cold retain values ?
Can you go online without download ?
Have you physically checked the LEDs on the controller ?
Have you got another engineering station.
If there was a problem during download and the download procedure crashed somewhere, then unfortunately you usually do have to restart the PLC to resolve the problem. But the controller should continue to run the previous version of the program meantime, so don't panic, take your time and collect and analyze as much information as you can.
Check Control Builder Session Logs
Right Click Controllers and "Show Remote Systems" - Check the loaded applications
Check the controller logs
Can the OPC Servers save the cold retain values ?
Can you go online without download ?
Have you physically checked the LEDs on the controller ?
Have you got another engineering station.
If there was a problem during download and the download procedure crashed somewhere, then unfortunately you usually do have to restart the PLC to resolve the problem. But the controller should continue to run the previous version of the program meantime, so don't panic, take your time and collect and analyze as much information as you can.
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