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