Functions
6-175
7SJ63 Manual
C53000-G1140-C120-1
6.20.1 Types of Commands
Two (2) types of commands can be processed within the device:
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Control commands
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Internal / pseudo commands
Control Commands
Control commands operate (OPEN/CLOSE) binary outputs. Examples are:
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Commands (e.g. operation of circuit breakers, etc.)
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Step Commands (e.g. raising and lowering transformer LTCs)
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Set-point Commands with configurable time settings (Petersen coils)
Internal / pseudo
Commands
These commands do not directly operate binary outputs. They serve to initiate internal
functions, simulate changes of state, or to acknowledge changes of state.
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Marking/Tagging commands are used to manually overwrite or set status functions
normally controlled by binary inputs.
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Additionally, Tagging commands are issued to establish internal settings, such as
switching authority (remote vs. local), parameter set changeover, data transmission
block to the SCADA interface, and measured value set-points.
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Acknowledgment and resetting commands for setting and resetting internal buffers.
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Status Information commands:
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Controlling activation of binary input status
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Binary Output Blocking
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