Message Block For Event List Via Profibus-Dp - Siemens SIPROTEC 7SA522 Manual

Data type definitions
3.9

Message block for event list via PROFIBUS-DP

Number of
byte-values
Message head...
Figure 3-9 Data type: Message block for event list via PROFIBUS-DP
Byte 1:
Identification
54
10
The complex data type "Message block" defines an entry in the event list via PROFI-
BUS-DP and contains an identification for the annunciation in the event list including
the associated time stamp information.
Further information regarding the properties as well as the retrieval methods of the
event list via PROFIBUS-DP can be found in chapter 2.5.
Identification
Byte 1
Milliseconds (0 ... 59999)
Byte 3 (MSB)
Hours (0 ... 23)
Byte 5
Month (1 = Jan. ...12 = Dec.)
Byte 7
Clock status
Byte 9
The identification byte identifies a single-point/double-point indication by means of the
set position "Byte offset" and "Bit mask" (ref. to chap. 4.2 "Customization of the
allocations") for the cyclic data exchange.
Instead of the "Bit mask" the bit position (0 to7) is set in the identification byte, in the
event of double-point alarms the least significant bit position in the byte.
For this purpose, the lower 3 bits of the identification byte define the bit position
(0 to 7) and the remaining higher order bits define the byte offset (0 to max. 31).
Value
Byte 2
Byte 4 (LSB)
Minutes (0 ... 59)
Byte 6
Day (1 ... 31)
Byte 8
Year (0 = 1900)
Byte 10
SIPROTEC PROFIBUS-DP - Communication profile
...Message end
C53000-L1840-B001-03