Any advantage to upgrading CLX Rev. 12.33?

Is there any advantage to upgrading CLX 5562 Rev. 12.33? We have two of these systems that have been in service over two years without any problems. However, we are about to have a plant shutdown and it would be a good time to upgrade if there are any advantages. My primary concern is upsetting communication. One system communicates via enet with several SLC 5/05s, and the other via enet to four I/O racks and one SLC 5/05.

I normally don't like to mess with things if there isn't a problem, but I would appreciate everyone else's feedback.

Thanks,
Charlie

unless there is reason to upgrade, don't.

The latest processor firmware revision is 12.42. There have been a number of correction anomilies, changes and improvements since 12.33. I would read the release notes to make an informed decision.

I hope this link works.

http://support.rockwellautomation.com/controlflash/FirmwareFiles/1756rn601hene.pdf