Siemens Simovert Masterdrives Compendium page 376

Communication / PROFIBUS
8.2.5.3 CBP slots in Compact and chassis-type units with the CUs of function
classes FC (CU1), VC (CU2) or SC (CU3)
NOTE
8.2-46
The adaption board with optional board
can be mounted in the electronics box in
1.B2 and/or 1.B3.
Fig. 8.2-10 Electronics box with free slots (+1.B2 and +1.B3) and adaptation board with
CBP
On the adaptation board ADB (Order No. 6SX7010-0KA00), only one
CBP can be mounted in slot X198, i.e. at the BOTTOM.
If the CBP is mounted with adaptation board, the LBA (Local Bus
Adapter, LBA, Order No. 6SE7090-0XX84-4HA0) must first be mounted.
If only one optional board is used, it must always be inserted in slot
+1.B2 (on the RIGHT) in the electronics box.
If, in addition to the CBP, a technology board (T100 / T300 or T400) is
inserted in the electronics box, it must be inserted in slot +1.B2. In this
case, the CBP is inserted in slot +1.B3.
Electronics box
Adaption board
ADB
+1.B1
+1.B3
+1.B2
Optional board
CBP
6SE7087-6QX70 (Version AK)
Compendium Motion Control
09.2008
Siemens AG
SIMOVERT MASTERDRIVES