Yokogawa Button Operated DX2000 - Manual (Page 19)

1-8
IM 04L42B01-01E
Internal Switch
The alarm status can be output to software switches (30 internal switches). The values of
the internal switch are shown below. Like the alarm output relay, you can specify AND/
OR operation (see the previous page). The internal switches cannot be operated other
than for alarm output.
Alarm
Alarm occurrence
Alarm release
Internal switch
1
0
The internal switches can be used events of the event action function (see section 1.6).
In addition, the internal switches can be written in calculation expressions of computation
channels (/M1 or /PM1 option).
Alarm Annunciator Function (Release number 3 or later)
You can use the DX as an alarm annunciator. No lock-in, lock-in, and double lock-in
sequences are supported. The alarm display and alarm output relay operations follow the
annunciator sequence.
For the setting procedure, see section 3.12.
1.2 Alarms