IFM DTI921 handleiding
Handleiding
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• orientation of the device and ID tags
For the best possible radio connection, follow the installation instructions in the operating
manuals of the ID tag and the device.
9.13.2 ID tag selection
With ID tag selection, only desired ID tags are detected by the device. All ID tags that do not meet the
criteria are rejected by the device and not taken into account.
An ID tag is selected by comparing data stored on the ID tag and a given bit mask. The data is stored
in one of the following memory areas for the purpose of comparison: EPC, TID or USER.
The rejected ID tags are
• not transferred to the process image,
• not displayed via the status LEDs of the device,
• not taken into account when automatically reading or writing data.
The position of the data is specified by the parameters “Selection start bit” and “Selection length” in
each case. If the data matches the comparison bit mask, the ID tag is selected and further processed
by the device.
Examples
Only ID tags with a certain EPC value are detected in the selection. This makes it possible to
distinguish between ID tags on a transport pallet and ID tags directly on the goods on the transport
pallet.
There is a match between the data and the selection mask. The ID tag is detected by the device:
Value (hex) Value (binary)
Selection start bit 0
Selection length 8
Selection mask 0x3B 0b00111011
Data on the ID tag 0x3B 0b00111011
The data and the selection mask are different. The ID tag is not detected by the device:
Value (hex) Value (binary)
Selection start bit 0
Selection length 8
Selection mask 0x3B 0b00111011
Data on the ID tag 0x34 0b00110100
There is a match between the data and the selection mask. The ID tag is detected by the device:
Value (hex) Value (binary)
Selection start bit 0
Selection length 1
Selection mask 0x3B 0b00111011
Data on the ID tag 0x34 0b00110100
There is a match between the data and the selection mask. The ID tag is detected by the device:
Bekijk gratis de handleiding van IFM DTI921, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | IFM |
| Model | DTI921 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 3980 MB |
