64
489 GENERATOR MANAGEMENT RELAY – COMMUNICATIONS GUIDE
N
Note
Any detected change in the state of any point assigned to Class 1 will cause the
generation of an event object.
CG.5.2 Binary / Control Relay Output Block (Objects 10/12)
The following restrictions should be noted when using object 12 to control the points listed
above:
1.
The
Count
field is checked first. If it is zero, the command will be accepted but no
action will be taken. If this field is non-zero, the command will be executed exactly
once regardless of its value.
2.
The
Control Code
field of object 12 is then inspected:
• The Queue and Clear sub-fields are ignored.
• If the
Control Code
field is zero (i.e., NUL operation) the command is accepted but
no action is taken.
• For all points, the only valid control is “Close - Pulse On” (41 hex). This is used to
initiate the function (e.g., Reset) associated with the point.
• Any value in the
Control Code
field not specified above is invalid and will be
rejected.
• The
On Time
and
Off Time
fields are ignored. A ”Pulse On” control takes effect
immediately when received. Thus, the timing is irrelevant.
• The
Status
field in the response will reflect the success or failure of the control
attempt thus:
• A Status of “Request Accepted” (0) will be returned if the command was accepted.
• A Status of “Request not Accepted due to Formatting Errors” (3) will be returned if
the
Control Code
field was incorrectly formatted or an invalid Code was present in
the command.
Table CG–6: Binary Output Point List
INDEX
DESCRIPTION
0
Reset
1
Generator Start
2
Generator Stop
3
Clear Trip Counters
4
Clear Last Trip Data
5
Clear MWh and Mvarh
6
Clear Peak Demand Data
7
Clear Generator Information
8
Clear Breaker Information
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