Omron V720 Series, Руководство по эксплуатации

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Communications Commands and Responses
Section 5-3
5-14
5-3-5 Polling Commands and Responses
1) Polling Single Auto Read (PR)
Immediately after receiving the Polling Single Auto Read Command, the Controller returns a re-
sponse indicating the acceptance of the command and waits for a Tag to enter the communica-
tions area of the Antenna. Then it reads the data of the entering Tag. The host can inquire of the
Controller the results of communications processing using a subcommand.
Command Frame Structure
STX Node No. Command
code
“PR”
Data
type
First read
page
No. of read
pages
ETX BCC
1 2 2 1 2 2 1 1
Data type Specifies whether the read data is represented in ASCII or HEX.
A: ASCII code
H: HEX code
For details, refer to 5-6 Data Type.
First read page Specifies the first page of the Tag containing data to be read in HEX.
Setting range: 00h to 0Ah, FFh
(FFh can be specified only when using Philips’ block 4 as user memory. For details,
refer to 2-5 Tag Memory Map.)
No. of read pages Specifies the number of pages to which data is written in HEX.
Setting range: 01h to 0Ch
Response Frame Structure
STX Node No. Retry
flag
Command
code
“PR”
Response
code
“74”
ETX BCC
1 2 1 2 2 1 1
Response code 74: Command received.
For other response codes, refer to 5-10 Response Code List.
Note: Philips’ block 4 can be used as user memory with Controller software ver-
sions 1.5 or later. The software version can be read with the Version Com-
mand (VS).