Siemens SENTRON VL Series System Manual page 256

Data library
8.7 Formats
Table 8- 41
This time format is compliant with the PROFIBUS time format.
256
PROFIBUS time format (DS100.4)
Byte Bit
0 —
1 —
2 —
3 0 - 4
3 7
4 0 - 4
4 5 - 7
5 —
6 —
7 —
Meaning
Higher-order digits of milliseconds
Low-order digits of milliseconds
Minute
Hour
1 = Summertime; 0 = Wintertime
Day of the month (1 ... 31)
Weekday (1 = Monday, ..., 7 = Sunday)
Month
Year (02 = 2002)
Reserved
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02