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5. Introduction
5.1.1 Sensor programming
The measuring channels are programmed, completely and automatically, via
the ALMEMO
plugs; they are ready-to-operate immediately. However, via in-
®
terface cable ZA1919-DKUx the user can still add to or modify the program-
ming. (see Man. 6.3) Or, alternatively, the sensors can be programmed on the
ALMEMO
®
data logger.
5.1.2 Process control
In order to transmit measured values from all measuring points to the data log-
ger in digital form measuring point scanning must be performed continuously
with measured value output according to a time-based process control. A cycle
is provided for this purpose.
Cycle
The cycle can be programmed to any value between 0 minutes and 99 hours.
This cycle governs the cyclic output of measured values over a wireless link or
to the interface. If the cycle is set to 0, data is transmitted continuously; in this
case the sensor device should be powered from an external source.
With settings upward of 1 minute the sensor device automatically adopts sleep
mode; it only resumes normal status when the cycle completes. This ensures
a longer battery life if power is being supplied in battery mode.
Data transmission
As soon as the cycle starts, measured values from the first four active chan-
nels are transmitted from the wireless measuring instrument cyclically via the
wireless link to the wireless sensor module plugged in at a sensor socket on
the ALMEMO
®
measuring instrument. The measuring range displayed here is
the digital range 'DIGI' with the appropriate units and the original designation.
Measured value correction is performed in the wireless measuring instrument;
parameters are not transmitted to the receiving device (see 14).
10
ALMEMO
2790
®
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