Yokogawa Removable Chassis DX1000N - Manual (Page 136)

Switching Operation Screens
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Index
4.3 Displaying Past Measured Data (Historical
Trend Display)
There are five methods to display the past measured data.
For a description of the function, see section 1.3.
Recall from the display selection menu (see this section).
Display from the alarm summary (see section 4.6).
Display from the message summary (see section 4.7).
Display from the memory summary (see section 4.8).
Show the measured data stored on an external storage medium (see section 6.8).
Procedure
• Showing the Display
Carry out the procedure below while memory sampling is in progress.
1. Press DISP/ENTER to show the display selection menu.
2. Press the arrow keys to select TREND HISTORY, and press DISP/ENTER.
The display appears.
• Changing the Displayed Contents
1. Press DISP/ENTER to show the display selection menu.
2. Press the right arrow key to display the sub menu.
3. Press the up and down arrow keys to select the sub menu item.
ALL CHANNEL: Displays the waveforms of all channels
GROUP CHANNEL: Displays the waveforms of the
channels registered to groups
CURSOR TIME ON: Shows the time at the cursor position in
the top right of the display
CURSOR TIME OFF: Displays the date/time of the data at the
right edge of the screen
Group name: Displays the group
Historical trend display sub menu
MESSAGE DISP2: Displays the messages using display
method 2
MESSAGE DISP1: Displays the messages using display
method 1
SCALE ON: Displays the scale
SCALE OFF: Clears the scale
RELATIVE TIME: Displays the time that has elapsed since
memory start
ABSOLUTE TIME: Displays the time when data was
recorded
CURSOR VALUE: With display data, shows the maximum
data value at the cursor position. With
event data, shows the data at the cursor
position.
DIGITAL MAX/MIN: Displays the maximum and minimum
values at the cursor position and the
maximum and minimum values within
the displayed data in the digital value
display area
AUTO ZONE ON: Displays trend waveforms separately by
assigning each channel in the group to
separate display areas (zones)
AUTO ZONE OFF: Does not display waveforms in zones
FINE GRID ON: Displays the fine grid
FINE GRID OFF: Clears the fine grid
TAG DETAIL ON: When a tag does not fit into the typical
tag display space, the alarm and
measured values are covered so that the
tag can be displayed completely.
TAG DETAIL OFF: Priority is not given to tag display.