5-7
Setting Command
5-7
5-54
5-7-5 UID/
SNR Addition Setting (SN)
This command selects whether SNR will be added to a response to a Read Command
(excluding Special Read).
<Command Format>
STX
Node No.
Command
code
"SN"
Additi
on
mode
ETX BCC
1 2
2 1
1
1
Specify whether SNR will be added to a response.
Setting range: 0 to 1, or *
When * is specified, the Reader/Writer reads the number that is
currently set.
Specification
number
0 1
*
Addition mode
UID(SNR)
addition mode
Disabled Enabled
-
<Response
Format>
STX Node
No. Retry
flag
Command
code
"SN"
Response
code:
"00"
Addit
ion
mode
ETX BCC
1 2 1 2
2 1
1
1
Response code:
00: Normal completion
For other response codes, refer to 5-3-7 Response Code List.
addition mode
Indicates the number corresponding to the specified addition mode.
<Response when setting is invalid>
STX Node
No. Retry
flag
Command
code
"RD"
Response
code:
"00"
Read data
ETX BCC
1 2 1 2
2
As
specified 1
1
<Response when setting is valid>
STX Node
No. Retry
flag
Command
code
"RD"
Response
code:
"00"
UID(SNR) Read
data
ETX
BCC
1 2 1 2
2
16
As
specified
1
1
Response code:
00: Normal completion
For other response codes, refer to 5-3-7 Response Code List.
UID(SNR)
Indicates the UID(SNR) read from the Tag.
Read data
Indicates the data read from the Tag.
Precautions on using the command in I.CODE1 mode
・
SNR is not added to the response for Fast Read Access (U
□
) even though UID/SNR addition setting is
enabled.
・
The correct SNR value is not returned as a response by the Tag Designation Command even though
UID/SNR addition setting is enabled. The setting must be disabled or data in SNR area must be
ignored.
:・
The setting is enabled after reset by the Reset Command(XZ). To enable the setting forthe
next start-up, the setting must be saved by Set Value Writing (EW).