Hach-Lange PHOSPHAX indoor sc - Manual (Page 100)

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Fieldbus
The FIELDBUS register contains FFFFh (65536dec) when the feature is disabled for any
reason.
A measurement series is initiated with entering "1" to register 40128 (Enter "2" for
2 channel instruments to start measurements on channel 2). The register will return to "0"
after the measurement series is done. The measurement results can be found at 40001
(channel 1) and 40062 (channel 2).
A value will appear every AVERAGE and at end of series if remind measurement(s) exist.
Example: NUMBER OF MEAS is set to 5 and AVERAGE to 2. The result are 3 values,
the 1st is the average of measurement 1 and 2, the second is the average of value 3 and
4, the last one is the reminding value of the 5th measurement
Note: Internal processes like cleaning will be interrupted from measurement series.The interrupted
process will start again after the end of the measurement series. To use the START BY BUS feature,
the sample has to be available at any time for cleaning and rinsing purposes. An ongoing
measurement series will not be interrupted by internal processes.
B.3 External trigger contact, control by external signal
If the controller board is equipped with an external input terminal (optional board version),
measurements can be issued by applying an external DC voltage of 15V to 30V to the
terminal for longer than 1 second. When the field bus control is activated, the input will
issue a forced measurement as described within Fieldbus control.
When the START BY BUS feature is activated, the external input will issue a
measurement series as described within the START BY BUS section.
Note: Only measurements on channel 1 can be started with the external contact on 2 channel
instruments.