Siemens SIMATIC TIM 3V-IE DNP3 - Page 198

The SINAUT Configuration Tool
6.6 TD7onTIM
TIM DNP3
198 System Manual, 12/2015, C79000-G8976-C253-04
All changes of a process value are buffered in the event memory and repor
t-
ed immediately to the master station.
Event class 2
All changes of a process value are buffered in the event memory and repor
t-
ed immediately to the master station.
Event class 3
Only the last change to a process value is buffered in the event memory. The
current, modified value is transferred to the master station when the master
station requests events of event class 3.
Event class 3 is, for e
xample, suitable for transferring counter readings since
only the last counted value is of interest.
No event class
If you do not specify an event class, there is no change monitoring of the
process values of the data object and changes are not reported
to the mas-
ter station as an event (class 0 poll).
Command direction
Range of va
l-
ues:
IN / OUT
Default:
•
TIM with master station function: ON (cannot be changed)
•
TIM with station / node station function: OUT
Explanation:
The parameter specifies whether an object is sent with the master station
function or the station function of the TIM.
•
"Command direction" activated: The object is sent with the master station
function of the TIM. The object is assigned a master station connection
(session).
•
"Command direction" deactivated: The object is sent with the station
function of the TIM.
The parameter must be identified differently for the two corresponding o
b-
jects by two communicating stations (object pair). The o
ption is enabled for
the sending object and disabled for the receiving object.