profibus communication ,plc s7-400 and sinamics s120

I would like to know how can i find which outputs from the plc are assigned to the control word of the sinamics...im using the starter programm

thank  you in advance

tsaros

So the first QB  is assigned  to PZD1 the second to PZD2 and so on?

 Not quite.

You are dealing with words, so the first QB is PZD1, QB +2 is PZD2, etc.

Yes you are right i  m just facing a strange problem.From hardware configuration the output starts

from 530 and it ends at 541.From the picture i have attached you can see that we are using some

bits from first pzd one to control the motor.for example the first bit from pzd it sould be energized

from the first bit of qw530 of the plc right?but in my case the first bit of pzd1 is energized from q531.0

and that is what is confusing me.