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Communications Commands and Responses
3) Polling Check (PC)
You can check the results while the Polling Single Autoread Command and Polling Single
Autowrite Command are being executed. You can use Polling Check after the Polling Single
Autoread Command and Polling Single Autowrite Command have been sent.
Command frame structure
STX Node No. Command
1
2
Response Frame Structure
· Response to Read commands
STX Node No.
1
2
· Response to Write commands
STX Node No.
1
2
· Response when a Tag is not yet detected
This response is returned when the Polling Check Command is received before a Tag is detected.
STX Node No.
1
2
Response code
Read data
5-16
ETX BCC
code
"PC"
2
1
1
Retry
Command
Response
flag
code
code
"PR"
"00"
1
2
2
Command
Retry
Response
flag
code
code
"PW"
"00"
1
2
2
Retry
Command
Response
flag
code
code
"PC"
"74"
1
2
2
00: Normal completion
74: Before the completion of communications with the Tag
For other response codes, refer to 5-10 Response Code List.
Indicates the data having been read. The number of characters of the data is as
follows:
ASCII code: No. of read pages x 4
HEX code: No. of read pages x 8
Read data
ETX BCC
Specified
number
ETX BCC
1
1
ETX BCC
1
1
Section 5-3
1
1
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