Multi-Tech Systems 7500 - Manual (Page 204)

Screen Messages ION 7500 / ION 7600 User’s Guide
Page 204 Custom Front Panel Displays Technical Note
For any value on the graph, you can access a data log screen. Simply press the
softkey corresponding to the Log button to view the graphed value in a data log
format. The log screen also lists the twelve parameter values that surround the
current cursor position, each with a corresponding timestamp.
Screen Messages
Messages that may appear on the Trending Display screen are explained below.
Adding New Trend Display Modules
Users who are familiar with the ION Architecture, Designer software, and Vista
software can link additional Display modules for trending. Here are some
guidelines:
◆ You can configure any Display module as Trend Display by setting the Screen
Type setup register to Data Log Trend - Log Source 1 to 4.
◆ The maximum number of Trend Display modules permitted is 10.
◆ Any Data Recorder module output log can be connected to a Trend Display
module.
◆ The Data Recorder module output log must be connected to the first input
of the associated Trend Display module.
◆ Even though a Data Recorder module has up to sixteen Source inputs, only
the first four Source inputs can be viewed in Trend Display.
◆ With External Numeric modules, min/max can be set in Vista.
◆ The External Numeric module that sets up the minimum value for the
displayed data must be connected to the second input of the associated
Trend Display module.
◆ The External Numeric module that sets up the maximum value for the
displayed data must be connected to the third input of the associated Trend
Display module.
Screen Message Description
Start of Logged Data
This message displays when you have navigated to the extreme left of the
Trending Display Graph where the plotted data starts.
End of Logged Data
When you have navigated to the extreme right of the Trending Display Graph
where the plotted data ends, this message appears.
Out of Range
This displays when a logged data value is not within the minimum or
maximum range. You can view the “out of range” values on the Data Log
screen.
Setup Error
This never displays if you use the default Trending Display screens. This
message will display if the default Trending Display framework has been
modified so that a minimum value is larger than a maximum value. It also
displays when a Display module configured for Trending has not been linked
to a Data Recorder module, so there are no values to plot.
Invalid Log
This message displays whenever an invalid log value is recorded. In addition,
trend graphs cannot be viewed.