Profibus DP: output slot for base address %1 (size %2) not allowed


%1 = Logical base address of the requested area %2 = Size of the area in bytes


An incorrect logical base address was set for a digital or analog output, the area is resides in the access range of the PLC (PIQ, base addresses < 256).

For length =1 it is a digital output,

For length =2 it is an analog output.


-    Channel not ready.

-    NC Start disable in this channel.


-    Interface signals are set.

-    Alarm display.

Only use addresses >= 256 for output slots.

Enter correct base addresses in the machine data:

For length=1: Correct machine data MN_HW_ASSIGN_DIG_FASTOUT.

For length=2: Correct machine data MN_HW_ASSIGN_ANA_FASTOUT.

NCK restart

Program Continuation:

If the error cannot be eliminated by this procedure, please make a note of the error text and contact the control system manufacturer.

Switch control OFF - ON.

© Siemens AG 2005 All Rights Reserved