0x0084 - 1000 0100 bin = Bus Error + Ready = (No physical error , but configuration error)
Lokalbus-Master ist betriebsbereit, kein Datenaustausch über den Bus
0x0c15 - Projectconfig does not fit to the physical buss configuration | Der Modultyp entspricht nicht dem projektierten Wert.
0x000b - 11 dec At this position

So make sure that number 11 realy is the device you think it is.

When having the SE modules in the middle of the BUS you neeed SC-A modules.
There is a dieference between SC and SC-A modules.
SC-A can have followup modules.
SC modules are used to fill up empty slots at the and of the BUS.