Applies To:
  • CitectSCADA 5.xx
  • CitectHMI 5.xx

A situation can occur where Citect will pause for 5 minutes on shutdown, then display a "Deadlock detected" error message. 

Unfortunately there are many causes for this error message. Generally this will be related to shutdown of the CTAPI interface.  As of v6.10, you can prevent the error message being displayed, by adding the following settings to your citect.ini file:

[General]DeadlockTimeout [default=300]
Specifies the number of seconds to wait before a wait on an event is considered ‘timed out’.

[General]DeadlockWarning [0,1,default=1]
Specifies whether an error message is displayed if a time-out actually occurs. Set to 0 to stop the error message being displayed. 

five dead lock freeze pauses sync 311 warning timeout