Siemens SIPROTEC 7SS523 V3.2 Manual page 379

3. column "IEC 60870-5-103":
Column "Type" (Function Bus Zone): Information that belong to the bus zones are
of type 207. In this type up to 256 information numbers can be addressed. The type is
divided into 12 blocks with 21 information numbers each. The blocks are assigned to
the bus zones. The basic type number is given in brackets. Example:
Bus Zone
n
1
...
12
The effective information number can be calculated with the following formula:
x = 21 ∗ (n - 1) + m
List of information - Central Unit
Information Type
Number m
1 207
...
21
... ...
1 207
...
21
7SS52 V4 Manual
C53000-G1176-C182-1
Effective Information
Number x
1
...
21
...
232
...
252
363