ABB REB500 Communication Protocol Manual page 14

Section 2
Interbay bus functions
6
Figure 2 Dialog for configuring the CAA
Table 2 Configuration of IEC 870-5-103
Setting Description
CAA Individual Common Address of ASDU for
each Bay Unit
If "Common Link Layer Address" of the 'SCS Configuration' is not selected:
The link address and the Common Address of ASDU (CAA) for all units is setup
in the "CAA Setting" dialog by pressing the "Addr. Setting" button.
Figure 3 Dialog for configuring the CAA and LLA
Default setting
0 Central Unit
1-60 Bay Units
Communication Protocol Manual, IEC 60870-5-103
Distributed busbar protection REB500
1MRK 511 371-UEN