TReX User Manual v15.30 Firmware
ALARMS Sub-Menu
The ALARMS sub-menu allows configuring of up to 16 weekly, daily or hourly timers. These
alarms operate from the set internal clock (SYSTEM->TIME). The time must already be set in
order for these alarms to operate.
Once an ALARM has been selected, a day of the week, hour and minute must be specified for
the alarm to turn on, and also similar parameters for when the alarm is to turn off.
If the DAY or HOUR is set to EVERY, then the alarm item is ignored, matching immediately.
Using the configuration shown above, alarm 1 will turn on every hour at 4 past the hour, and
will turn off 6 minutes later at 10 past the hour.
With the configuration shown below, alarm 1 will be enabled at the start of a working week on
Monday, and turn off at the end of the working day on Friday. Any combination of any alarms
can be used together as part of a PLC program to perform more complex timing tasks such as
alarms that allow air conditioning to turn on during weekdays, but only between certain hours.
© WTE Limited, 2022 – Christchurch New Zealand
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Summary of Contents for TReX-460
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