User's Manual

User Manual | SRU-8X1X RFID Reader 18000-63
Doc No. 47000001740
|
Version 01
|
2018-12-11
|
released
Page 27 of 105
Confidential
Example
The frame ASyncGetEPCs is shown here as an example. The ID for this command is 0x0111, which makes
the frame look as follows:
0x5A 0x50 0x02 0x00 0x00 0x00 0x11 0x01 0xA5
Extended Block Structure
If a data block to be transmitted exceeds 16 kB, it is necessary to subdivide into several 16-kB blocks. These
blocks receive a block number, and the first block contains the total data length. It is necessary to confirm the
reception of each block by means of an answer.
First block:
Start + block number always 0 + 4-byte total data length + data block + end
All other blocks:
Start + block number + data block + end
Answer to confirm the reception:
Start + block number + end
The start consists of 0xAA 0xBB 0x0E 0x01. The end consists of 0xAA 0xCC. If the 0xAA occurs in the RFID
Reader Protocol frame, it is necessary to double it: 0xAA ĺ 0xAA 0xAA