Baracoda Barcode Reader - Manual (Page 76)

DualRunners – Communication Protocol v1.3 - 76 -
Data Capture
for Workforce
in Motion
7. 7. 7. 7.
I-CODE SLI tags
7.1 Tag memory structure 7.1 Tag memory structure 7.1 Tag memory structure 7.1 Tag memory structure
I-CODE SLI tags have 112 bytes of memory divided into 28 (twenty-eight) 4-bytes long blocks.
7.2 Reading tag data 7.2 Reading tag data 7.2 Reading tag data 7.2 Reading tag data
a) Communication diagram
The following diagram shows what needs to be done in order to read the contents of an I-CODE SLI tag:
Terminal BRRT or BDR Reader
b) Data sent from the terminal to the reader
First of all, the terminal needs to send to the reader a Read data command to the reader. This command is
described in the communication protocol guide of the reader; its code ID is 0x81. In this case, the format of the
command will be as follows (in hexadecimal):
DE 00 07 81 00 04 1E 07 00 FF
where:
- DE: prefix
- 00 07: data length (7 bytes will follow)
- 81: command ID
- 00 04: protocol mask (ISO 15693 for I-CODE SLI)
- 1E: timeout for the response (30s)
- 07: card type (I-CODE SLI)
- 00 FF: start/stop sectors/pages (00 FF means read the whole memory)
Send read command to
reader
Send tag data that has been
read
Send end of data packet