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47DT OPERATING MANUAL EM-9508-B Rev.7
12.2 LATCHING ALARM
The alarm output ON except for the P output can be held, which is called latching alarm. “Output latched / measuring con-
tinued” (‘OUT’) or “output latched / measuring stopped” (‘ALL’) can be selected. In order to reset the latching, set the latch-
ing alarm to “no latching”, turn off the power and restart, or provide the RESET signal. The default setting is “no latching”.
IMPORTANT
• The P status/output is not latched.
• When the alarm output is ON with the latching alarm set to “output latched / measuring stopped”, the display value is
held with the measurement stopped. When the input changes significantly and rapidly, the held display value may not
conform to the last measured value or setpoint.
12.2.1 OPERATING PROCEDURE
NOTE
The following figures are display examples. The displays
depend on the specifications and settings.
1
Hold down Alarm/
↓
and Init/
↑
buttons at once for 3 seconds or
more to move on to Advanced Setting Mode.
• The averaging type is indicated.
• The SD indicates ‘AVE-TP’.
NOTE
With the I/O option code ‘6’ or ‘A’, the event trigger mode is indicated (‘EVENT’ on the SD).
2
Press Alarm/
↓
or Init/
↑
button to go to the latching alarm set-
ting.
• The latching alarm is indicated.
• The SD indicates ‘OUT-STP’.
3
Press Shift and Up buttons to select the latching alarm.
• Select one among ‘OFF’, ‘OUT’ and ‘ALL’.
1,2,
4,5
1,2,
4,5
3
3
Blinking
