IFM DTI921 handleiding
Handleiding
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9.12.14 Parameter “Antenna Output Power for Write Access"
The parameter sets the antenna output power for writing to ID tags.
Writing data to the ID tag requires more energy than reading data. Therefore, the maximum
distance between the device and the ID tag is less when writing data than when reading data.
The difference can be compensated by setting the antenna output power for reading and writing
individually.
9.12.15 Parameter "ID Tag Detection Mode”
The parameter sets the behaviour of the device for detecting ID tags. The following detection modes
can be set:
Detection mode
Typical number of ID tags in the field
at the same time
Description
Fast response time <4 The device tries to detect an ID tag as
quickly as possible as soon as they
reach or leave the device's detection
field.
This mode is particularly suitable for
presence detection of ID tags. For this
purpose, <4 ID tags should be in the de-
tection field at the same time.
Moving ID tags <4 This mode is particularly suitable for an
ID tag that moves quickly through the
detection field of the device. The "com-
ing/going messages" can be output with
a delay.
Several ID tags 4-16 This mode is particularly suitable if there
are several ID tags in the detection field
at the same time.
The detection modes are suitable for diverse applications and not only for those mentioned in
the descriptions.
9.13 ID tag
9.13.1 ID tag detection
The device automatically searches for available ID tags that are within range of the device. The LED
indicator on the device lights up when one or more ID tags are detected (see operating instructions of
the device). The information of the ID tags is provided as process data at the IO-Link interface.
The ID tag detection with the device depends on the following:
• the set output power
• the ID tag selection (Ò ID tag selection/41)
• the RSSI filter
• the device’s antenna
The ID tags are detected on the basis of the EPC data on the ID tag. The EPC data of the ID tags
must be different. If ID tags use the same EPC data, the device cannot distinguish them.
A maximum of 16 bytes of the EPC data of an ID tag are mapped on the process interface. The
other EPC data is ignored by the device.
The device can only distinguish ID tags if the first 16 bytes are different.
The radio connection between the ID tag and the device depends on the following:
• environment of the device and ID tags
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Productinformatie
| Merk | IFM |
| Model | DTI921 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 3980 MB |
