slave not exist
We have a ABB DCS control system. it's consist of tow AC800F works redundantly .but suddenly we lose all system in a second and many fault appears in a log file consist of:
SL_2F1_3 slave not exist
SL_2F1_4 slave not exist
SL_2F1_5 slave not exist
but after second it will be fix and after about 14 days it comes again.pls help me
With our AC700F, sometimes we had a problem with the profibus slave modules.
The problem came from the power supply of the modules. There was 2 power supplies for our modules : the 24V for each modules and the power supply of the profibus cable directly. There was a light on each slave module but only in red (default), because there was only the profibus supply. When the 24V was switched on, all the problem were fixed.
Hope that helps...
(sorry for my bad english)