Profibus to Anybus

Hallo,

Can anyone help me with a profibus connection to a Anybus divice?
My S7 configuration is as follow;

CP313C-PtP
CP343-1
CP342-5

Wat have i ready done?
I must connect to a profibus converter with type ANYBUS DP-DV1
This has 8 words input and 8 words output.
The configuration in the S7 is for me OK
CP342-5 configured as master.
I use FC1 and FC2 with 2 DB block for in and out.
DB1 -> 16 Byte (= 8 words)
BD2 -> 16 Byte (= 8 words)

Problem:
On the CP342-2 the BUSY-led blinks always.
But i see communication on de slave,
but nothings happend on the slave.

Can somebody tel me wy the busy led is blinking?

Thanks;
Jacques