Why are the LED's RUN HALT and ERROR flashing when going online?

FAQ #100665

When going online with Step7 the LED's RUN HALT and ERROR are flashing.


The CPU is running, when connecting with the programming tool and going online it can happen that all LED's RUN HALT and ERROR are flashing.

If the CPU has an old firmware and a new version of Step 7 is used this can happen do to some new telegramms in Step7 which can not be handled by our firmware.

Update your firmware to the actual version

The actual firmware version is available on the support site. We recommend to update to the last official version.



xx7 Series / Programming

Last update: 29.05.2015 21:34

First release: 25.01.2007 08:05

Views: 3894

The requested software / document is no longer marketed by Saia-Burgess Controls AG and without technical support. It is an older software version which can be operated only on certain now no longer commercially available products.