Omron V640 Series, Руководство пользователя, Страница: 37 / 120

35
CIDRW System
User’s Manual
SECTION 4
Command/Response Format
SECTION 4
Reading from/Writing to ID Tags
■
READ
Reads any pages of data from the ID Tag. The maximum number of pages that can be read at one time
is 16.
ID Tag Memory Maps Refer to page 111.
The response code (when normal: 00) and the data in the specified pages are returned in ascending order of
page numbers.
Response Code List
Type
Response
code
Name Description
Normal end 00 Normal end Command execution is completed normally.
Host commu-
nications error 14 Format error There is a mistake in the command format. (For example, the command
code is undefined, or the page or address specification is inappropriate.)
Communica-
tions error 70 Communications error Noise or another hindrance occurs during communications with an ID
Tag, and communications cannot be completed normally.
71 Verification error Correct data cannot be written to an ID Tag.
72 No Tag error Either there is no ID Tag in front of the CIDRW Head, or the CIDRW
Head is unable to detect the ID Tag due to environmental factors (e.g.,
noise).
7B Outside write area error A write operation was not completed normally because the ID Tag was
in an area in which the ID Tag could be read but not written.
7E ID system error (1) The ID Tag is in a status where it cannot execute command processing.
7F ID system error (2) An inapplicable ID Tag has been used.
CPU hardware
error 9A Hardware error in CPU
An error occurred when writing to EEPROM.
Parameter Description
Parameter Description
Page designation Pages are specified by setting the bits corresponding to pages that are to be read to 1 and setting
the other bits to 0, then converting the result to a hexadecimal character string.
Response
code
Read data
CR Page n
⋅ ⋅ ⋅
Page m (n<m)
Data 1 ⋅ ⋅ ⋅ Data 8 Data 1 ⋅ ⋅ ⋅ Data 8
0 0 0Dh
Command
Bit 7 - 0 7 - 3 2 1 0 7 6 - 1 0 7 6 - 2 1 0
Page Sys - Sys Sys - Sys 17 16 15 14 13 - 8 7 6 5 - 1 Sys Sys
Designation
0* 0* 0* 0* 0* 0/1 0/1 0/1 0/1 0/1 ••• 0/1 0/1 0/1 0/1 ••• 0/1 0* 0*
Value 00 00 to 07 00 to FF 00 to FC
* Always specify 0. If you specify 1 an error (Response code: 14) will occur.
Command code Page designation (8 characters) CR
0 1 0 0 0Dh
Response