LS Industrial Systems LGRF-H, Руководство пользователя

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“LS Ubiquitous RF-ID System”
4.2.7 Read Multi Block
z
Function summary : reading the data of designated Tag Block data at one time
z
Sending factor: Baddr (Block address of Tag), Bnum
z
Receiving factor : Bdata (Data saved in Block address)
This is the command that accesses and read the data of Tag memory.
The different thing from Read Single Block command is that it is available to read the
information of several blocks by one command. This is the Frame used when reading Tag data
written in several blocks at one time. The sending/receiving frame shows the frame structure of
Read Multi Block.
Sending Frame
No. 1
2 3 4 5 6 7 8 9
Description
F0 00 09 03 03 23 (Baddr) (Bum) (CS)
Receiving Frame
No.
1
2 3 4 5 6 ~ (N-1) N
Description F0 00 xx 03
00
Status Bdata [] (CS)
EX1) Read three blocks (0 ~ 2 Blocks) of Tag by Read Multi Block
Sending Frame
: F0 00 09 03 03 23 00 02 24
Receiving Frame
: F0 00 12 03 00 31 32 33 34 35 36 37 38 30 31 32 33 6F
0 Block Data : assumed by 31 32 33 34 (Hex).
1 st Block Data : assumed by 35 36 37 38 (Hex).
2 nd Block Data : assumed by 30 31 32 33 (Hex).
Data size of one Block : 4 Bytes