202
D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – COMMUNICATIONS GUIDE
DNP DEVICE PROFILE
CHAPTER 3: DNP COMMUNICATION
–
3 (select)
–
4 (operate)
–
5 (direct operate)
–
6 (direct operate, no acknowledge)
•
Qualifier codes for requests, object 12, variation 1:
–
00, 01 (start-stop)
–
07, 08 (limited quantity)
–
17, 28 (index)
The following codes are used for responses.
•
Function codes for responses, object 12, variation 1:
–
129 (response)
•
Qualifier codes for responses, object 12, variation 1:
–
echo of request
Object 20 (binary counters)
Object 20, variation 0: Binary counter
Variation 0 is used to request the default variation. The following codes are used for
requests.
•
Function codes for requests, object 20, variation 0:
–
1 (read)
–
7 (freeze)
–
8 (freeze, no acknowledge)
–
9 (freeze clear)
–
10 (freeze clear, no acknowledge)
–
22 (assign class)
•
Qualifier codes for requests, object 20, variation 0:
–
00, 01 (start-stop)
–
06 (no range, or all)
–
07, 08 (limited quantity)
–
17, 28 (index)
There are no codes used for responses.
Object 20, variation 1: 32-bit binary counter
Object 20, variation 2: 16-bit binary counter
Object 20, variation 5: 32-bit binary counter without flag
Object 20, variation 6: 16-bit binary counter without flag
The following codes are used for requests.
•
Function codes for requests, object 20, variations 1, 2, 5, and 6:
–
1 (read)
–
7 (freeze)
–
8 (freeze, no acknowledge)
–
9 (freeze clear)
–
10 (freeze clear, no acknowledge)
–
22 (assign class)
•
Qualifier codes for requests, object 20, variations 1, 2, 5, and 6:
–
00, 01 (start-stop)
