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Communications Command
5-3-7 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>
Node No.. Command code
STX
1
2
<Response Format>
(1) Response to Polling Single Auto Read Command (PR)
STX
Node No..
1
2
(2) Response to Polling Single Auto Write Command (PW)
STX
Node No..
1
2
(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..
1
2
Response code
UID (SNR)
Read data
!
Caution
5-18
ETX BCC
"PC"
2
1
1
Retry
Response
Command code
code
"PR"
flag
"00"
1
2
2
Retry
Response
Command code
code
"PW"
flag
"00"
1
2
2
Retry
Command code
Response
"PC"
code
flag
"74"
1
2
2
00:normal completion
74: In a case before the communications with a Tag is completed.
For other response codes, refer to 5-2-4 Response code List.
Indicates UID (SNR) data having read from a tag.
UID (SNR) (Tag-specified code) additional setting (refer to 5-6-5 SN Com-
mand) 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."
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
With regard to the response of polling command (PR), read data will be
preceded by UID (SNR) when SNR (Tag-specific code) addition setting
(refer to 7 SN Command, 5-6-5) is enabled.
With regard to the response of polling write command (PW), end code
"00" in the ISO mode will be followed by UID (SNR) when SNR (Tag-
specific code) addition setting (refer to SN Command, 5-6-5) is enabled.
UID(SNR)
Read data
16
As specified
UID(SNR)
ETX BCC
16
1
ETX BCC
1
1
Section 5-3
ETX BCC
1
1
1
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