Omron CJ1W-V680C11, User Manual

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SECTIO
N
6
Communica
tions
Comman
d
s
SECTION 6
Controlling the ID Sensor Unit
137
RFID System
User's Manual

Read with Error Correction
Reads the data from the RF Tag from an area written by the Write with Error Correction Command, and
performs an error check and 1-bit error correction.
Up to 510 bytes (i.e., 255 words) can be specified for one command execution.
• Be sure to read the same area that was written by the Write with Error Correction Command.
• Check the memory capacity of the RF Tag before setting the Processing Address and Number of Processing Bytes. If
the Processing Address and Number of Processing Bytes are not suitable for the RF Tag for which communications
are being performed, the RF Tag Address Error Flag (CIO n+8, bit 13) will turn ON.
• The five bytes of data after the area extending from the Processing Address for the Number of Processing Bytes is the
check code area. Do not write any data to the check code area.
• Check the memory capacity of the RF Tag before setting the Processing Address and Number of Processing Bytes. If
the Processing Address and Number of Processing Bytes are not suitable for the RF Tag for which communications
are being performed, the RF Tag Address Error Flag (CIO n+8, bit 13) will turn ON.
Word address
Bit No. Type Bit name Description
Antenna 1 of
CS1W-V680C11,
CS1W-V680C12,
CJ1W-V680C11,
or CJ1W-V680C12
Antenna 2 of
CS1W-V680C12
or
CJ1W-V680C12
n+1 n+11
08 to 15
Command
Command code 0A hex
04 to 07
Communications
Specification
p. 85
Specify the communications method with
the RF Tag.
0 Trigger
1 Single auto
2 Repeat auto
3 FIFO trigger
4 FIFO repeat
5 Multi-access trigger
6 Multi-access repeat
00 to 03
Processing
Specification
p. 70
Specify the read data storage order.
0 Leftmost
→
Rightmost
1 Rightmost
→
Leftmost
n+2 n+12 00 to 15
Processing
Address Specify the first RF Tag address to read.
Setting range: 0000 to FFFA hex
n+3 n+13 00 to 15
Number of
Processing Bytes Specify the number of RF Tag read bytes.
Setting range: 0001 to 01FE hex
n+4 n+14 00 to 15
Data
storage
area
Data Storage
Word Address
(rightmost 4 digits) Specify the read data storage destination.
p. 70
n+5 n+15
12 to 15 Data Storage Area
08 to 11 Bank Specification
00 to 07
Data Storage
Word Address
(leftmost 2 digits)
n+6 n+16 00 to 15 Option Command Option 0000 hex