4-2 UR FAMILY – COMMUNICATIONS GUIDE
DEVICE PROFILE DOCUMENT CHAPTER 4: DNP COMMUNICATION
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Maximum data link frame size (octets)
Transmitted: 292
Received: 292
Maximum application fragment size (octets)
Transmitted: configurable up to 2048
Received: 2048
Maximum data link re-tries
None
Fixed at 3
Configurable
Maximum application layer re-tries
None
Configurable
Requires data link layer confirmation
Never
Always
Sometimes
Configurable
Requires application layer confirmation
Never
Always
When reporting Event Data
When sending multi-fragment responses
Sometimes
Configurable
Timeouts while waiting for
Data Link Confirm:
None Fixed at ____ Variable Configurable
Complete Appl. Fragment:
None Fixed at ____ Variable Configurable
Application Confirm:
None Fixed at 10 s Variable Configurable
Complete Appl. Response:
None Fixed at ____ Variable Configurable
Others
Transmission Delay: No intentional delay
Need Time Interval: Configurable (default = 24 hrs.)
Select/Operate Arm Timeout: 10 s
Binary input change scanning period: 8 times per power system cycle
Analog input change scanning period: 500 ms
Counter change scanning period: 500 ms
Frozen counter event scanning period: 500 ms
Unsolicited response notification delay: 100 ms
Unsolicited response retry delay: configurable 0 to 60 sec.