Delphin ProfiMessage, Hardware Manual

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Profi Message
Monitoring
Measurement range monitoring : When measurement data is not within the Meas-
urement range specified in the Main settings tab, the channel status is set to ‘Meas-
urement range overrun/underrun’. Otherwise the status displays ‘OK’. The output
value of the channel is set to the maximum or minimum value of the
Scaling value
(in the Main settings tab). Channel status values are available in status mon-
itoring.
Wire break monitoring : The option is useful for monitoring sensor failure in, for
example, thermocouples or sensors with 4 mA–20 mA output. In the event of a fail-
ure, channel status is set to ‘Wire-break’. Channel status values are available in
status monitoring.
Cycle times
Calibration every 2 ^ x cycles : Offset errors require correcting from considerable
ambient temperature fluctuations in long term measurement procedures. This set-
ting determines how often this happens. A cycle is made up of the measurement of
all active channels in the module (refer to
Module's overall measurement time in
the Measurement cycle settings tab). The default is every 1024 cycles (210). For
an A/D measurement time of 100 ms for 8 active channels, any offset errors are
then corrected approximately every 14 minutes.
Measurement every x cycles : The setting can be made for a measurement from a
channel not to be taken in every cycle (as in all other channels), but, for example,
only every 10th cycle. A cycle is made up of the measurement of all active channels
in the module (refer to
Module's overall measurement time in the Measurement
cycle settings tab).
Cold junction
The setting is available for thermocouple sensor types and pH probes. Enter the
Channel that is to be used for the thermocouple's cold junction measurement
(junction between thermocouple and copper wire/connector) or the temperature
compensation for the pH probe. The default
Reference Junction uses the meas-
urement from the Pt100 temperature sensor at the I/O module's terminal and is
practical only for the thermocouple sensor type. A different channel may also be
used for when the temperature at the thermocouple to the copper wire junction
remains constant, or this temperature value can be entered as a
Manual value .
Inherit status means that the cold junction is also applied to the current meas-
uring point.
4.6.3.9 Measuring time tab
Reiter ist noch nicht beschrieben! Beschreibung folgt in Kürze.
4.6.4 Digital input with counter/frequency measurement
Bei den Modulen DIOT, AMDT und ADFT können Sie auf dem Register Grundein-
stellungen (DIOT und ADFT) bzw. Drehzahlmessung (AMDT) wählen, ob die
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Delphin Technology AG
Dezember 2015
Profi Message Manual