Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 166)

<6. Display and Operations of Windows while Connected to ASIU>
6-3
IM 11B06C01-01E
6.1.2 Tag List Window
The Tag List window displays the tag numbers and signals of DI’s or DO’s. These display items
can be edited in the ASIU Operation window.
F6-1-2.ai
6.2 Short-term Trend Window
The Short-term Trend window displays the trend of instantaneous values of the selected AI’s (1 to
16) of ASIU. The basic functions are the same as those of the Chromatogram window.
To reference short-term trend information, read “chromatogram” in the help of the Chromatogram
window as “trend”, unless otherwise stated. The Short-term Trend window can display the latest
trend, previous trend, and trend data stored in the analyzer server, and trend data that has been
saved to a file. Moreover, currently displayed trend data can be saved in a file.
Note that a trend does not have peak information, gate information, temperature data, or
pressure data. Thus, the Set Mark command in the Graph menu and the Temperature/Pressure
Display command in the Graph menu are invalid.
The trend data that is displayed by default upon opening the Short-term Trend window are latest
trend 1 and previous trend 1.
The display and operations of the Short-term Trend window are basically the same as those of
the Chromatogram window available while connected to GC1000 Mark II. This section describes
portions of the display or operations of the window that differ from those when connected to
GC1000. For other portions, see subsection 4.3, “Chromatogram Window,” in Chapter 4, “Display
and Operations during Connection to GC1000 Mark II.”
6.2.1 Trend Display
The Short-term Trend window can display eight trend graphs.
n Trend Display
Trend graphs that can be displayed are as follows:
Chromatogram Type Description
Latest trend This is the trend currently being measured.
Previous trend This is the trend measured previously, which is updated periodically.
File trend This is trend that has been saved to a file.
Differential trend This is the result of differences determined by comparing two trends that
are displayed.
History trend This is a previous trend that has been stored in the analyzer server.
5th Edition : Nov. 16, 2011-00