HF scientific Online Data Acquisition System User Manual

Page 23

Ref 22838 (8/02)
Rev 2.3

3.6 System Panel
The System Panel (refer to Fig 3-4) is associated with the server process (one
that is communicating with the turbidimeters). This panel is a master panel and
should be used only for diagnostic and trouble shooting purposes. The SCADA
system user has access to most of the information and device configuration
parameters from the Summary/Faceplate/Edit Device panels and hence these
features will not be discussed in this section. The following are the features that
are unique to the System panel. The user (Security level at or above 9) needs to
access the System panel if any of these features are to be monitored or edited:

Number of Devices: This text entry box defines the total number of devices in the
RS485/232 loop. The valid range of values is 1-32. The number entered specifies
the number of devices that Lookout will sequentially poll in every polling cycle.

Fig.

3-4

Poll Rate: This text entry box is used to specify the frequency at which Lookout
will poll the devices. The value needs to be specified in the format HH:MM:SS.
For example 00:00:02 would specify that the polling will occur at 2 second
intervals. A white arrow on the left side of the display table visually indicates the
sequencer operation. The arrow points to the device that is currently being polled.