IFM DTI921 handleiding
Handleiding
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DTI801 DTI901 DTI911 DTI921
19
Status bit Value Description
Cmd Start Acknowledge 0 Start of a read/write operation not acknowledged
1 Start of a read/write operation acknowledged
Cmd Antenna deactivate 0 Activate antenna
1 Deactivate antenna
Cmd Start 0 Reset trigger for read/write operation
1 Set trigger for read/write operation
9.2 Operating mode "SINGLE EPC
In the operating mode “SINGLE EPC“, the EPC of an ID tag is read and provided by the device in the
process data input. If several ID tags are in the detection zone of the device at the same time, the ID
tag with the strongest reception signal (RSSI) is read. If there is no ID tag in the detection zone, the
value “0x00” is read. The RSSI byte outputs the current reception signal.
The RSSI value is a signed integer value. For example, "0xD6" corresponds to the RSSI value
"-42 dBm".
A maximum of 16 bytes are read for an EPC. If the EPC stored on the ID tag is longer, the remaining
bytes are truncated. If the EPC is shorter, the remaining bytes are filled with “0x00”. The current length
of the EPC is output in the “Length of EPC” field.
When a new ID tag is detected, the device increments the block counter.
The block counter counts up to “255” and then starts again at “0”.
The operating mode “SINGLE EPC” is the default operating mode after the device has been started.
The operating mode does not use the following status bits (Ò Status bits/18):
- Cmd Start
- Cmd Start Acknowledge
- Cmd End
Byte Process data output Process data input
0 Command value = 0x00 Command value = 0x00
1 Status Status
2 ignored RSSI
3 ignored Length of EPC
4 ignored EPC 0
5 ignored EPC 1
6 ignored EPC 2
7 ignored EPC 3
8 ignored EPC 4
9 ignored EPC 5
10 ignored EPC 6
11 ignored EPC 7
12 ignored EPC 8
13 ignored EPC 9
14 ignored EPC 10
15 ignored EPC 11
16 ignored EPC 12
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Productinformatie
| Merk | IFM |
| Model | DTI921 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 3980 MB |
