wtw IQ SENSOR NET System 2020 XT, Operating Manual

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What to do if... System 2020 XT C
ONNECT
10 - 8
ba75970e01 10/2012
10.4.2 Adding and replacing IQ sensors
Inactive datasets of
IQ sensors
If an IQ sensor is removed from the system, its settings remain stored
in the IQ S
ENSOR
N
ET
controller. A "?" appears in the left column of the
Edit list of sensors
menu. This indicates an "inactive dataset". A dataset
contains the following information:

Serial number of the IQ sensor (and, with it, the type of sensor)

Display position

All sensor settings including differential sensor

All characteristics of the link with an output.
If no suitable inactive dataset is available, a newly connected IQ sensor
is automatically recognized as a new module and added to the list of
sensors (see section 3.11 S
YSTEM EXTENSION AND MODIFICATION
).
If an IQ sensor is connected to the system when an inactive dataset is
present, the following cases are possible:
The maximum number of data sets (active and inactive
datasets) for IQ sensors is limited to 20 in the
IQ S
ENSOR
N
ET
system 2020 XT. When this number is
reached, no further IQ sensor can be installed. If neces
-
sary, an inactive dataset has to be erased to make an
extension possible.
The current calibration data of the IQ sensor is always
stored in the sensor. If an IQ sensor is connected that is
ready for operation and calibrated, this can be used imme
-
diately without the need for recalibration.
To erase inactive datasets, see section 5.4.3.