Table of Contents
Advertisement
Section 4
Data Read/Write with ID Tag
4.4 Command types and response <applicable to
OMRON original 1:1 protocol>
4.4.1 Read
This command is used to read data from an ID tag. It is possible to read data of arbitrary pages on a page by
page basis. Up to 16 pages can be handled in this operation.
Command frame structure
As a parameter for a command, a page designation for a page from which data is read is transmitted. A
particular page is designated by setting a bit for representing a read page to 1 and other bits to 0. This
binary coded number converted into a hexadecimal notation is transmitted as a command. It is also
possible to designate an arbitrary page.
Command
"0"
"1"
Bit
7
Page
30
Designation
0/1
Value
∗ These bits data are preassigned for the system. Be sure to set them to 0. A 1-setting will trigger an
error (error code: "14").
Response frame structure
The response code (normal completion "00") and data read are returned. The read data blocks are
returned in the order of designated page sequence. If an error should occur, a corresponding error
code is returned as a responses code.
Response code
"0"
"0"
* Number of data blocks n =number of designated pages
<Example of command execution>
A case where the data in all of six pages 1, 3, 5 through 8 are read
→ 0100 000003D4 [CR]
(00000000 00000000 00000011 11010100 : binary notation)
← 00 1234567890123456 1122334455667788 (page 5)(page 6)⋅⋅⋅⋅⋅⋅(page 8)[CR]
Data in page 1
V700-L11
42
User's Manual
"0"
"0"
6
1
0
7
6
29
24
23
22
21
0/1
0/1
0/1
0/1
0/1
"00"
"FF"
"00"
Read data*
(Data 1)
Data in page 3
Page designation (8 characters)
1
0
7
6
1
16
15
14
13
8
0/1
0/1
0/1
0/1
0/1
"FF"
"00"
"FF"
CR
$0D
(Data n)
×
8 (in units of 2 characters)
CR
$0D
0
7
6
2
1
7
6
5
1
Sys
∗
0/1
0/1
0/1
0/1
0
"00"
"FC"
0
Sys
∗
0
Advertisement
Table of Contents
