S&C Instruction Sheet 461-509
57
Configuring the Communication Gateway
Status Point:
These point numbers represent what the SCADA system will see in
response to a static or event data request or an unsolicited event response.
Code Description:
These are the point codes representing specific analog inputs that
may be assigned to individual SCADA point numbers for TripSaver II reclosers paired
with a communication gateway. A full list of code-description definitions is found in
Instruction Sheet 461-560, “S&C TripSaver® II Communication Gateway:
DNP Points List
and Implementation
.” Code descriptions are defined by selecting the
Code Description
field in line with the respective
Status Point
field. A drop-down dialogue box will appear
with code definitions for all TripSaver II reclosers paired with the communication
gateway. When a code definition has been chosen, select the Check Mark icon to finalize
it. Removal of a code selection can be performed by selecting the blank row in the pull-
down menu and clicking on the check mark. This will result in the field being displayed
as empty. Finally, click on the
Save
button.
Event Class:
This is the DNP event class assigned to this point. Specify Class 1, Class 2,
or Class 3, or choose the
No Event
option to turn off event-data reporting for this point.
Scaling:
A scaling factor is used for the analog input data to match the analog input
requirements of the SCADA system. The original raw analog input data will be multiplied
by the specified scaling factor prior to delivery to the SCADA master. If the
Fixed
Deadband
option is enabled for an analog input setpoint, the scaling factor will be
applied before the Fixed Deadband limits are checked.
Pct (Percent) Deadband:
This field creates a range based on a percentage of the last
reported value for this analog input. The range boundary is defined by multiplying the
field input value by the value of the analog point. In the case where the next analog input
“READ,” specific to this point, exceeds the range either by a positive or negative amount,
the information will be included in the next event report. The default value is
Disabled
.
No range is created and no comparison occurs. Specifying a
Zero
value or any other
number creates the range and enables the comparison. To disable this field, select the
Blank Row
option in the pull-down menu to switch back to
Disabled
mode.
Fixed Deadband:
This field creates a fixed deadband range relative to the last reported
value for this analog input. If the next analog input “READ,” specific to this point, exceeds
the range either by a positive or negative amount, the information will be included in the
next event report. The default value is
Disabled
. No range is created, and no comparison
occurs. Specifying a
Zero
value or any other number creates the range and enables the
comparison. To disable this field after it has been enabled, select the
Blank Row
option
in the pull-down menu to switch back to
Disabled
mode.
