Specifications

8 – Configuring Points
190 R400
When a point is deleted from the server, the internal number for that point is
freed, and is available to be allocated to another point.
If you need to know which internal point numbers are currently in use, you can
use the listag utility to list the points currently configured in the database. For
details of running the listag utility, refer to “Command Reference” on page 483.
Note All references to points in the server database use the internal point number. If
you reload a point, the point will retain its internal point number. However, if
you delete a point and then add the point some time later, it might be allocated a
different internal point number. This means that the point is no longer available
to custom displays currently being displayed, or to standard displays such as
Trend Sets, that accessed it. You need to:
• Re-enter the point on standard displays (such as Trend Sets).
• Re-load into Station any custom displays that reference the point (from the
Station menu, select View
⇒
Reload Page).
Checking the Scanning Performance of Your System
You can use the Scanning Statistics display on a Station to view statistics for the
scanning subsystem and to check on the scanning performance (of controllers
other than the Control Processors).
To call up the Scanning Statistics display:
1 On the System Configuration Menu display click Channels. This calls up the
Channel Configuration Summary display.
2 On the Channel Configuration Summary display click the Channel Scanning
Statistics link.
This calls up the Scanning Statistics display, which consists of the following
three sections providing information on channel scan loads, scan units, scan
period loading, and System Sinewave parameters:
• Channels
• Scanning Scheduling
• System Sinewave
Channels
This section contains channel-based statistics that enable the scan load on
individual channels to be analyzed.
plscpcg.book Page 190 Monday, May 28, 2001 10:11 AM