Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 100)

1-88
IM 04L31A01-01E
Alarm Summary Display
A list of the most recent alarms can be displayed.
• Up to 120 sets of alarm information can be stored to the internal memory. When the
number of alarm information exceeds 120, the information is overwritten from the
oldest information.
• By scrolling the screen using arrow keys, the alarm information in the internal memory
can be displayed.
• You can select arbitrary alarm information and show the historical trend of the display
data or event data that contains the alarm information.
For the operating procedure, see section 8.1.
* Select the alarm information using the cursor and select [INFORMATION] > [JUMP TO HISTORY]
on the display selection menu to display the historical trend containing the selected alarm
information.)
Number of the alarm information displayed on the bottom line
Number of the alarm information in the internal memory (up to 120)
Alarm No. (1, 2, 3, 4)
Date/Time when the alarm occurred
Date/Time when the alarm was released
Mark (Indicates the alarm status)
Alarm type (See page 4-20 for the meaning of the control alarm symbols;
see page 7-8 for the meaning of the measurement alarm symbols.)
Control loop name (tag + tag comment)/channel number (or tag)
Control alarms: PVH, PVL, SPH, SPL, OTH, OTL, DVH, DVL, DVO, DVI
Measurement alarms: H, L, h, l, R, r, T, t
Alarm information
selection cursor*
Alarm status
mark
Note
• You can also display only the control alarms (see page 8-1).
• Alarm type indicates [ETC], if the alarm is an external loop and the alarm is of a type other
than the control alarms that you can specify on the CX2000.
Alarm Mark Indication
The mark indication varies depending on the hold/non-hold setting of alarm indication
(see section 1.6) as follows.
Mark
Alarm ACK Alarm ACK
When indication is
set to non-hold When indication is
set to hold
Alarm
Occurrence
Release
Blinking
red
indication
Blinking
red
indication
Blinking
green
indication Red Red Green Green Green
Setting the Display Conditions of the LCD
The following display conditions of the LCD can be configured.
Display Attribute Setting
Background color of The background color of the display can be set to white or black. The initial
the operation display setting of the control operation display is [Black]; the initial setting of the
measurement operation display is [White].
LCD brightness The brightness of the LCD can be set between four levels. The initial setting is [3].
Backlight saver The lifetime of the LCD backlight can be extended by automatically dimming
the light when there is no key operation for a certain amount of time. The
display returns to the original brightness with a key operation or an alarm
occurrence. The initial setting is set so that the backlight saver is disabled.
1.16 Display Function