For Support Contact +46 8 25 28 75, [email protected] or +61 2 9956 7377, [email protected]
Setting the SWT timers
Setting the SWT timers is done by entering the interval in minutes in the periodicity area.
Select if the unit shall send the data in periodic interval starting at the unit boot up time or if
the data send interval shall be synchronised on the hour change e.g. 02:00, 04:00, 06:00 etc
if the interval is set to 120 minutes.
One thing to note about using "Synchronized" is that if the software clock has a time that is
past the time entered; the unit will not trigger the timer until the following day.
Data Logging (SWT1)
A limited amount of data can be stored in the memory during periods of network outages or if
sleep mode is used.
Data logging
•
Off
•
On (timed)
•
On (Timed/Event on I/O1)
– When an alarm event occurs on I/O1 the unit log a value. This
function is only available on channel 1.
Pulse Counting Transition
•
Low to high
– Counts a pulse on transition from closed circuit (<0.5V) to open circuit
(>2.5V).
•
High to low
– Counts a pulse on transition from open circuit (>2.5V) to closed circuit (<0.5V).
•
Both
– Uses both "Low to high" and "High to low".
•
The pulse register can hold a value between 0
– 4294967295.
Periodicity
•
Periodic
– This works on the configured interval, so that a log will occur every X minutes.
There is however no control of what actual time the logging starts, so if you need logging to
occur at a certain time you need to use "Synchronized".
•
Synchronized
– This starts at the nominated time and adds the "Send interval" to that time
so the next send is performed at the time required.
•
There is one significant issue with the second type of timing for logging/sending, since it
depends on the Real Time Clock. If your device is powered off and then powered on again
at a later time the Real Time Clock, which is a software and not a hardware clock, will now
be out of sync with the real time and your chosen starting times will no longer be accurate.
•
The device can have its Real Time Clock and Reference Date reset by connecting to the
serial port and sending the correct ET commands, the wireless modem does not need to be
