Yokogawa Value Series FX1000 - Manual (Page 25)

1-16
IM 04L21B01-01EN
Historical Trend Display
The waveform of the past measured data (display or event data) in the internal memory
or external storage medium can be displayed. This function is called Historical trend.
• Methods of Displaying the Historical Trend
There are four methods to display the historical trend of the measured data in the
internal memory.
• Display from the alarm summary. For the operating procedure, see section 4.6.
• Display from the message summary. For the operating procedure, see section 4.7.
• Display from the memory summary. For the operating procedure, see section 4.8.
• Recall from the display selection menu. For the operating procedure, see section 4.3.
Measured data on an external storage medium can also be displayed as historical
trend. For the operating procedure, see section 6.8.
• Displayed Contents
Cursor
Historical trend
Present trend
Message
Waveform (channel display color)
Background color
(changeable)
Location of the most
recent data
Date and time at the lower end of the time
axis
Half screen display
Trip line
Date and time at the upper end of the time
axis, or the time at the cursor location
The time at the cursor location is
surrounded by a yellow square.
Unit
Tag or channel number
(channel display color)
1 You can also display only the digital value of the cursor position
(the maximum value at the cursor position).
Measured values (maximum and
minimum values for the entire display) 1
Measured values (maximum and
minimum values at the cursor position) 1
Item Description
Alarm summary Displays an alarm summary of the displayed data.
Message summary Displays a message summary of the displayed data.
Memory information Displays the properties (such as the file name, start time, and end time)
of the displayed data.
• Added Messages
Added messages can be written. For the operating procedure, see section 5.4.
1.3 Display