Communication blocks
2-12
Function Blocks - FM 458-1 DP
Edition 12.2004
2.2.4 DPPEVT Process alarm information, PROFIBUS DP Symbol
DPPEVT
STA
I
―
Station
SLO
I
―
Slot
SUB
I
―
Sub-module
SBN
I
―
Sub-network
EVC
BY
―
Event classes and IDs
IOF
BY
―
IO flag
IN
BO
―
Input module
OUT
BO
―
Output module
MDL
W
―
Logical address
PAD
DW
―
OB40_POINT_ADDR
YYR
I
―
Year
YMO
I
―
Month
YDA
I
―
Day
YHR
I
―
Hour
YMI
I
―
Minute
YSE
I
―
Seconds
QTS
BO
―
Block state
YTS
W
―
Status display
The
DPPEV
(DP process event) provides more detailed information
about the Profibus DP process alarm (OB40 alarm). Contrary to the
DPEVT, only selected information/data is available, but then, in a
conditioned form.
When an alarm event is output, all of the values at the outputs are
updated.
For a communications error, the cause is additionally output at YTS and
the QTS output is set to "0".
Symbol
Brief description
Mode of operation