Siemens SIMATIC NET CP 1243-1 DNP3, Руководство по настройке

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Configuration
3.8 DNP3 parameters of the interfaces
Configuration - DNP3
58
Configuration Manual, 11/2018, C79000-G8976-C508-01
Unsolicited sending
● Unsolicited reporting:
Transfer mode for events
–
Yes
Event frames are transferred immediately.
With this option, the station independently establishes a connection with the master.
If unsolicited transmission in the master is disabled, the master sends the
"DISABLE_UNSOLICITED" function code (unsolicited frames cannot be sent by the
station). In this case, the station saves the events without sending them immediately.
– No
Event frames are only transmitted when data is requested from the master.
For consistent configuration, you should select the same setting for the station and the
master station.
Note
Setting for dedicated lines
When connecting a serial interface to a DNP3 dedicated line with the "half-duplex"
setting, you must set the parameter to "No".
To avoid collisions, you should also use this setting when connecting to full-duplex
multidrop dedicated lines.
● Max. number of retries
Maximum number of repetitions of unsolicited frames if no acknowledgment is received
from the master. After reaching the configured number, the station terminates the
connection.
Range of values: 0...255
Default setting: 3
● Monitoring time for spontaneous frames
(Unsolicited Confirmation Timeout period)
Time period (seconds) in which the station expects an acknowledgment of unsolicited
frames from the master. If no acknowledgment is received within the configured time
period, the data transmission is repeated.
The sent frames are deleted from the send buffer only when the station receives the
acknowledgment from the master.
Range of values: 1...65535
Default setting: 5