The SINAUT Configuration Tool
6.6 TD7onTIM
TIM DNP3
214 System Manual, 12/2015, C79000-G8976-C253-04
The configured number of values specifies how many DNP3 indexes are occupied
consecutively by the object starting with the specified start index. The following assignment
between the data type used and the DNP3 indexes used applies:
Number of DNP3 indexes
occupied
CHAR Printable ASCII characters 4 ... 48
-2 147 483 648 .. 2 147 483 647
38
38
You will find the DNP3 object groups compatible with the individual data types in the section
Objects of TD7onTIM (Page 177).
Note
Reducing message length
By reducing the maximum size (parameter “Number”), the message length can be reduced
to the actually required length if the entire data range of the object is not
required. This saves
transmission time.
Note
Configuring counted values as an event
For reliable transfer, counted values should always be assigned to an event class, for
example, event class 3. If counted values are transferred
only as static unacknowledged
DNP3 data, there is a danger that these are not sent consecutively to the DNP3 master
station if there are disruptions in communication.
Channel type: Counted value send
The object always occupies 1 or 4 indexes (1 index per activated channel).
Cnt01D_S sends 1 counted value, Cnt04D_S sends 4 counted values to a DNP3 master
station.
The objects can only be used in the station.
As the data source, an S7 word variable with a range of validity of 0 to 65535 is specified for
each active channel. The value transferred by the S7 CPU is added up in the DNP3 TIM and
transferred as a 16-bit counted value to the DNP3 master station. When the CPU or DNP3
TIM is restarted and if there is overflow of the counted value, the corresponding flag (restart /
discontinuity) of the counter is set.
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