Chapter 4 - 7SR120 · Data Communications Definitions
© 2017 Siemens Protection Devices Limited Chapter 4 - Page 67 of 84
Binary Output Status Points
Static (Steady-State) Object Number: 10
Change Event Object Number: 11
Control Relay Output Blocks (CROB) Object Number: 12
Binary Output Command Event Object Number: 13
Static Variation reported when variation 0 requested: 1 (Binary Output w/o status)
or 2 (Binary Output with status)
Change Event Variation reported when variation 0 requested: 1 (Binary Output Event w/o Time)
or 2 (Binary Output Event with Time)
Command Event Variation reported when variation 0 requested: 1 (Command Status w/o Time)
or 2 (Command Status with Time)
Point
Index
Description
Default
Change
Event
Assigned
Class
(1, 2, 3
or none)
Default
Variation
Static
Object 10
Default
Variation
Event
Object 11
Default
Command
Event
Object 13
Assigned
Class
(1, 2, 3
or none)
Default
Variation
Command
Event
Object 13
CROB
Supported
Operations
Default
CROB
Operations
Latch Off
Close
Trip
115 CB-1 Open 0 2 2 0 1
Pulse On
Latch On
Close
Pulse On
Latch On
116 CB-1 Close 0 2 2 0 1
Pulse On
Latch On
Close
Pulse On
Latch On
5.3.4 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. The
default Binary Counter and Frozen Counter event buffer sizes are set to 30.
The “Default Deadband,” and the “Default Change Event Assigned Class” columns are used to represent the absolute
amount by which the point must change before a Counter change event will be generated, and once generated in
which class poll (1, 2, 3, or none) will the change event be reported.
The default counter event buffer size is set 30. The counter event mode is set to Most Recent, only most recent event
for each point is stored.
Counters are by default returned in a class zero interrogation.
Note, not all points listed here apply to all builds of devices.
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