Siemens SENTRON VL Series System Manual page 274

Data library
8.7 Formats
The table below shows the format (373) "Phase number" that specifies the phase number of
the most loaded phase and the phase of the tripping operation.
Table 8- 78
274
Format (373) "Phase number"
Byte Value
0 0
0 1
0 2
0 3
0 4
Meaning
Phase L1
Phase L2
Phase L3
N-conductor
Ground fault
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02