User's Manual

5-4 Communication Commands
5-4
5-37
5-4-9 Polling Check (PC)
You can check the results while the Polling Single Auto Read Command and Polling Single Auto Write
Command are being executed. You can use Polling Check after the Polling Single Auto Read Command
and Polling Single Auto Write Command have been sent.
<Command Format>
STX Node No..
Command
code
“PC”
ETX BCC
1 2 2 1 1
<Response Format>
(1) Response to Polling Single Auto Read Command (PR)
STX Node No..
Retry
flag
Command
code
“PR”
Response
code
“00”
UID(SNR) Read data ETX BCC
1 2 1 2 2 16 As specified 1 1
(2) Response to Polling Single Auto Write Command (PW)
STX Node No..
Retry
flag
Command
code
“PW”
Response
code
“00”
UID(SNR) ETX BCC
1 2 1 2 2 16 1 1
(3) Response when a Tag is not detected
A response when Polling Check Command is received before the communications with a Tag is
completed.
STX Node No..
Retry
flag
Command code
“PC”
Response
code
“74”
ETX BCC
1 2 1 2 2 1 1
Response code 00:normal completion
74: In a case before the communications with a Tag is completed.
For other Response Codes, refer to SECTION 5-3-7 Response Code List.
UID (SNR) Indicates UID (SNR) data having read from a tag.
UID (SNR) (Tag-specified code) additional setting (refer to 5-6-5 SN
Command) is added when it is valid as follow
• Polling Single Auto Read: UID (SNR) is added before Read data.
• Polling Single Auto Write: When it is in ISO mode, UID (SNR) is
added after the Response code “00.”
Read data Indicates data to read from the Tag. The number of characters of the
data is as follows.
ASCII Code: No. of write pages x 4
HEX code: No. of write pages x 8