Setting Parameters
page 105
NF 650 - rev. 01 / 29.06.2020
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>Limit contact external read.<
If the entered upper external measured value limit is exceeded, a digital signal is out-
put. If the value falls below the lower external measured value limit, this digital signal
is reset = hysteresis function to avoid output jitter.
Selection/Input Options:
Logic: >Normally open< or >Normally closed<
Analog input: >Input 1< or >Input 2< or >Input x<; depending on the number of
inputs available
Threshold on: manual input
Threshold off: manual input
Absolute: check
Value at error: >Off< or >On< or >Hold Value<
Delay: manual input
Hold: manual input
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>Error message<
By activating individual selection fields (check box) it is possible to assign individual
error types to the digital output. Moreover the output logic can be switched between
normally open and normally closed.
Selection/Input Options:
Logic: >Normally open< or >Normally closed<
Error mask:
v-measurement: check
h-measurement: check
T-measurement: check
External measurement: check
System: check
Delay: manual input
Hold: manual input
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>Modbus Slave<
The digital output can be used via the Modbus for the controlled output of signals
from other systems.
Selection/Input Options:
Logic: >Normally open< or >Normally closed<
32.6 Setting Parameters in Q-Control Menu (function bookable as extra licence)
Fig. 32-20 Q-Control menu
This menu is available for Types TR and TZ as soon as the transmitters are equipped per
default with a 3-step controller to drive a slide valve or other actuators (equipment option, see
Sect. “17 Configuration”). Moreover, this controller function must be purchased separately as
