Binary / Control Relay Output Block (Objects 10/12; B Lock (O Bjects 10/12) - GE 489 Communications Manual

Note
CG.5.2 Binary / Control Relay Output Block (Objects 10/12)
64
Any detected change in the state of any point assigned to Class 1 will cause the
generation of an event object.
Table CG–6: Binary Output Point List
INDEX
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
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.
DESCRIPTION
489 GENERATOR MANAGEMENT RELAY – COMMUNICATIONS GUIDE