# IRC5 Error "IPC Queue Full"

**URL:** <https://tech-community.robotics.abb.com/t/irc5-error-ipc-queue-full/1562>\
**Category:** Robot Controller\
**Created:** [November 30, 2007, 4:50pm UTC](https://tech-community.robotics.abb.com/t/irc5-error-ipc-queue-full/1562 "2007-11-30T16:50:07Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![AlexLu](https://avatars.discourse-cdn.com/v4/letter/a/7ea924/32.png) [@AlexLu](https://tech-community.robotics.abb.com/u/AlexLu)\
**Post date:** [November 30, 2007, 4:50pm UTC](https://tech-community.robotics.abb.com/t/irc5-error-ipc-queue-full/1562/1 "2007-11-30T16:50:07Z")

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I got an error which was show as:

Description  
The interprocess communication (IPC) queue was full, when sending to trap routine.

Consequences

Causes

Actions

1. Restart the system

Anyone knows how to fix it?

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**Author:** ![claudio](https://avatars.discourse-cdn.com/v4/letter/c/7cd45c/32.png) [@claudio](https://tech-community.robotics.abb.com/u/claudio)\
**Post date:** [December 2, 2007, 11:28am UTC](https://tech-community.robotics.abb.com/t/irc5-error-ipc-queue-full/1562/2 "2007-12-02T11:28:17Z")

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Hi

I had a similar problem with a TRAP connected to a “flickering” signal.  
Since interrupts are queued by the system, the number of events in queue can be too high, especially if the code in the trap requires time to run.  
It’s also happens to me when a IsignalDI/TRAP is defined, and the program is stopped for a while.  
Give us some more details about the trap and the program. Maybe sombedoy can help you.

Regards.

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**Author:** ![joseantonio](https://avatars.discourse-cdn.com/v4/letter/j/3be4f8/32.png) [@joseantonio](https://tech-community.robotics.abb.com/u/joseantonio)\
**Post date:** [July 22, 2008, 9:42am UTC](https://tech-community.robotics.abb.com/t/irc5-error-ipc-queue-full/1562/3 "2008-07-22T09:42:56Z")

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:grinning: I HAVE A SIMILAR PROBLEM IN A M2000 IRB4400 ROBOT.

THE CODE TRAP MAKE A FLAG WITCH ON ONLY.

THIS OCCURS WHILE THE MOTOR OFF STATE IS PRESENT.

ANYBODY HAVE ANY IDEA?

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**Author:** ![Knud\_E\_Lindberg](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/knud_e_lindberg/32/4450_2.png) [@Knud\_E\_Lindberg](https://tech-community.robotics.abb.com/u/Knud_E_Lindberg)\
**Post date:** [July 22, 2008, 9:50am UTC](https://tech-community.robotics.abb.com/t/irc5-error-ipc-queue-full/1562/4 "2008-07-22T09:50:20Z")

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Hi

You can apply a active or passive filter in your io configuration, so the signal has to be hi or low in a specified time