APPENDIX C: DNP 3.0 PROTOCOL FOR F650 C.7 BINARY COUNTERS
GEK-106310-AF F650 DIGITAL BAY CONTROLLER c-19
C.7 Binary counters
The following table lists both Binary Counters (Object 20) and Frozen Counters (Object 21). When a freeze function is
performed on a Binary Counter point, the frozen value is available in the corresponding Frozen Counter point. Digital
Counter values are represented as 32-bit integers. The DNP 3.0 protocol defines counters to be unsigned integers. Care
should be taken when interpreting negative counter values.
BINARY COUNTERS
Static (Steady-State) Object Number: 20
Change Event Object Number: 22
Request Function Codes supported: 1 (read), 7 (freeze), 8 (freeze no ack), 9 (freeze and clear),
10 (freeze and clear, no ack), 22 (assign class)
Static Variation reported when variation 0 requested: 1 (32-Bit Binary Counter with Flag)
Change Event Variation reported when variation 0 requested: 1 (32-Bit Counter Change Event without time)
Default Class for all points: 3
FROZEN COUNTERS
Static (Steady-State) Object Number: 21
Change Event Object Number: 23
Request Function Codes supported: 1 (read)
Static Variation reported when variation 0 requested: 1 (32-Bit Frozen Counter with Flag)
Change Event Variation reported when variation 0 requested: 1 (32-Bit Frozen Counter Event without time)
Default Class for all points: 3
BINARY AND FROZEN COUNTERS POINT INDEX NAME/DESCRIPTION:
0 Pulse Counter 1 16 Pos MWatthour
1 Pulse Counter 2 17 Neg MWatthour
2 Pulse Counter 3 18 Pos MVatthour
3 Pulse Counter 4 19 Neg MVatthour
4 Pulse Counter 5
5 Pulse Counter 6
6 Pulse Counter 7
7 Pulse Counter 8
8 Digital Counter 1
9 Digital Counter 2
10 Digital Counter 3
11 Digital Counter 4
12 Digital Counter 5
13 Digital Counter 6
14 Digital Counter 7
15 Digital Counter 8
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