Communications Commands and Responses
Section 5-3
5-7
5-3-2
FIFO Access Commands and Responses
1)
Read (RD)
Command for the use of reading data of an ID Tag entering the Antenna area in entering order.
Command Frame Structure
STX
Node No.
Command
code
“RD”
Commu-
nications
Data
type
Fixed
“0”
First read
page
No. of read
pages
ETX BCC
1
2
2
2
1
1
2
2
1
1
Communications
Specifies a communications method.
FT: FIFO Trigger
FA: FIFO Auto
FR: FIFO Repeat
For details, refer to 5-5 Communications Methods.
Data type
Specifies whether the read data is represented in ASCII or HEX.
A: ASCII code
H: HEX code
For details, refer to 5-6 Data Type.
First read page
Specifies the first page of the Tag containing data to be read in HEX.
Setting range: 00h to 0Ah, FFh
(FFh can be specified only when using Philips’ block 4 as user memory. For de-
tails, refer to 2-5 Tag Memory Map.)
No. of read pages
Specifies the number of pages to which data is written in HEX.
Setting range: 01h to 0Ch
Response Frame Structure
STX
Node No.
Retry
flag
Command
code
“RD”
Response
code
“00”
Read data
ETX BCC
1
2
1
2
2
Specified
number
1
1
Response code
00: Normal completion
For other response codes, refer to 5-10 Response Code List.
Read data
Indicates the data having been read.
The number of characters of the data is as follows:
ASCII code: No. of read pages x 4
HEX code: No. of read pages x 8
