Yokogawa DAQWORX - Manual (Page 24)

1-16 IM WX102-01E
Reflash alarm
In general, in cases where one alarm output relay is shared by more than two channels,
no alarm signal will be issued if an alarm occurs in another channel or at another alarm
level, once an alarm has occurred in one channel and the alarm signal has been issued.
In this case, the alarm signal can be issued by designating the reflash output relay
(designated by alarm setting) as the alarm output relay. Up to six relays can be
designated as reflash relays.
Alarm state
Alarm output
relay
Channel 1
Channel 3
Channel 2
Output relay
Approx.
500 ms
Approx.
500 ms
Reflash alarm ON
Alarm output
relay
Reflash alarm OFF
Output relay
(A reflash relay is designated as
the output relay)
(A reflash relay is designated as
the output relay)
(A reflash relay is designated as
the output relay)
(Reflash relay output)
(Reflash relay output)
Alarm output relay hold/non-hold
Each alarm output relay can be switched to the hold mode or non-hold mode.
However, non-hold always applies to relays for which the reflash alarm is set, regardless
of the hold/non-hold setting.
Non-hold mode:
Each alarm output relay is activated according to its alarm ON/OFF state.
Alarm ON
Alarm OFF
Output relay ON
Output relay OFF
Hold mode:
Once an alarm occurs, the alarm output relay continues to be activated even if the alarm
is turned OFF. To stop the alarm relay output, reset the alarm using a communication
command. For a description of communications commands, see the GP-IB/RS232-C
Interface User’s Guide.
Alarm ON
Alarm OFF
Output relay ON
Output relay OFF
Alarm reset
1.5 DA100 Functions