RFID Communications
Example
Reads four bytes of data from tags with Family ID AAH, starting at address 0001H. A timeout of 2 seconds (07D0H = 2000 x 1 msec increments) is set for the completion of the Block Read All. The family code is set to zero so all tags will be read.
Command from Host
Field | Content |
Header | 0202H |
|
|
Command Size | 0009H |
|
|
Command Code | 85H |
|
|
Family Code | 00H |
|
|
Reserved | 00H |
|
|
Start Address | 0001H |
|
|
Length of Read | 0002H |
|
|
Timeout, 2 seconds | 07D0H |
|
|
Checksum | EBH |
|
|
Terminator | 03H |
|
|
Response from Controller
Field | Content |
Header | 0202H |
|
|
Response Size | 0003H |
|
|
Command Echo/Tag 1 | 85H |
|
|
Data from Address 0001H | 05H |
|
|
Data from Address 0002H | AAH |
|
|
Checksum | C8H |
|
|
Terminator | 03H |
|
|
Header | 0202H |
|
|
Response Size | 0003H |
|
|
Command Echo/Tag 2 | 85H |
|
|
Data from Address 0001H | 05H |
|
|
Data from Address 0002H | AAH |
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Checksum | C8H |
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|
Terminator | 03H |
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|
Header | 0202H |
|
|
Response Size | 0003H |
|
|
Command Status | FFH |
|
|
Number of Tags | 02H |
|
|
Status Byte | 08H |
|
|
Checksum | F3H |
|
|
Terminator | 03H |
|
|
LRP2000 Passive Reader/Writer | 108 |
