Yokogawa DR240 - Manual (Page 123)

8-4 IM DR231-01E
8.2 Alarm Display and Printing
CHART
KEYLOCK
RECORD
ALARM
Alarm display
• When an alarm status is detected and an alarm is issued, the [ALARM] lights.
• To display the alarm status for each channel, see Section 4.4, “Using the ALARM SEARCH
Display” on page 4-7 or Section 4.6, “Using the ALARM STATUS Display” on page 4-10.
• To display the alarm output relay or internal switch status, see Section 4.7, “Using the RELAY
STATUS Display” on page 4-11.
• If an alarm occurs while the alarm display hold (ALARM HOLD) is ON (because the alarm has
already been triggered), the [ALARM] and alarm status displays flash. Even after the alarm
status is released, the displays still flash.
• When the alarm status hold function is ON, use the alarm acknowledge function to determine
the current status of the alarm. To do this, display the FUNC menu, select [ALARM-ACK],
then press the ENTER key to use the alarm acknowledge function. For details, see Section 2.4,
“Alarm Function” on page 2-16.
Alarm printing
For details on setting the alarm printing, see Section 6.5, “Setting the Alarm Printout” on page 6-
10. The alarms are printed after making this setting.
Alarm reset
This function is selected from the FUNC menu when the relay hold function (see page 10-11) is
activated. To use the alarm reset function, select [ALARM RST], then press the ENTER key to
use the alarm reset function. For details on the alarm reset, see Section 2.4, “Alarm Function” on
page 2-16.