4-2
UR FAMILY – COMMUNICATIONS GUIDE
DEVICE PROFILE DOCUMENT
CHAPTER 4: DNP COMMUNICATION
4
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.
