GE 845 Instruction Manual page 170

DEVICE
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4–42
Binary Output Point 0 ON
Binary Output Point 0 OFF
...
Binary Output Point 15 ON
Binary Output Point 15 OFF
The DNP / IEC 60870-5-104 point lists always begin with point 0 and end at the first "Off"
value. Since DNP / IEC 60870-5-104 point lists must be in one continuous block, any points
assigned after the first "Off" point are ignored.
BINARY INPUT POINTS
The DNP binary input data points are configured through the DNP / IEC104 POINT LISTS
BINARY INPUT / MSP POINTS menu. When a freeze function is performed on a binary
counter point, the frozen value is available in the corresponding frozen counter point.
BINARY INPUT POINTS
Static (Steady-State) Object Number: 1
Change Event Object Number: 2
Request Function Codes supported: 1 (read), 22 (assign class)
Static Variation reported when variation 0 requested: 2 (Binary Input with status),
Configurable
Change Event Variation reported when variation 0 requested: 2 (Binary Input Change
with Time), Configurable
Change Event Scan Rate: 8 times per power system cycle
Change Event Buffer Size: 1024
Default Class for All Points: 1
POINT NAME/DESCRIPTION COUNTERS
The following details 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. 845 Digital Counter values are
represented as 16 or 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 noack), 9 (freeze and
clear), 10 (freeze and clear, noack), 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)
Change Event Buffer Size: 10
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 Counter
Change Event without time)
Change Event Buffer Size: 10
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 4: SETPOINTS