Configuration
3.8 DNP3 parameters of the interfaces
Configuration - DNP3
Configuration Manual, 11/2018, C79000-G8976-C508-01
53
For information on the time-of-day concept, see section Time-of-day synchronization
(Page 67).
This is where you can find an overview table of the stations connected to the network with
their most important parameters.
The WAN address is the station address.
DNP3 parameters of the interfaces
3.8.1
Transmission settings – DNP3
Transmission settings – DNP3
●
Max. time between Select and Operate
Max. time period (seconds) between command preselection (Select) and command input
(Operate)
– Master station:
If no command input follows a command preselection in the master station within the
configured period, the command must be selected again. Having to enter the
command twice reduces the risk of accidental operation in the master station.
– Station:
In order for a received command to be sent to the CPU and thereby take effect, the
device must not receive any further command frames between Select and Operate.
Range of values: 1..65535
Default setting: 1
If a master sends an object with function code 7 "DIRECT_OPERATE" to the station, the
station does not evaluate the time period configured here.
●
Connection monitoring time (application layer)
(Application layer confirmation timeout)
Period of time (seconds) in which the module expects a sign of life on the application
layer from its partner.
– Master (master station):
Time period in which the master expects a sign of life from the station.
If the configured time is exceeded, the master sends a frame to the station. If this
frame is not acknowledged by the station, the master classifies the station as not
accessible, terminates the connection and then re-establishes it.
Commands:
If a connection with a station is interrupted or disrupted, command frames are
repeated a maximum of three times before they are discarded by the master.
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