S&C Instruction Sheet 1043-550
65
Logging Status Points
Figure 15. Logging Status Points Screen.
From any Data Logging screen click the
Status Points
button to display the
Logging
Status Points
screen.
Status points are used to indicate whether a certain condition is active or inactive right
now, as well as how many times it has been active. Timestamps are also supplied to indicate
when the condition last became active and when it was last cleared.
There are exactly two historic events (also placed in the Historic Event Log) associated
with each status point—one event for the status point becoming active and one for the
status becoming inactive. For example, if a status point has become active 100 times
and is active now, there will be 199 related events in the Historic Log—100 for the status
becoming active, and 99 for the status clearing. Therefore, Status Points screens exist
for convenience—they do not provide any information that can not be deduced from the
Historic Event Log that resides in memory and/or on Compact Flash.
Each logging status point can optionally be mapped in the DNP point map, see Instruction
Sheet 1043-530, page 33. Whenever a status point thus mapped changes its status, Data
Logging will notify the DNP communications layer of the UIM software about the change.
In this way status point information can be made retrievable via SCADA.
Currently the application may contain up to 48 status points, displayed on three screens
that are connected via Page Up/Page Down buttons. Here are the pieces of data associated
with each status point, each residing in a separate column of the table on the screens:
Status Description
Describes briefly what the status point is. The list of status points is further down. Note
that IL needs to be connected to the control for this column to contain any descriptions.
Data Logging
