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RFID System
User’s Manual
SECTION 5
V600 Commands
SECTION 5
Communications
DATA CHECK (MD C/K)
The DATA CHECK command is used to write or verify the CRC code in the specified check block. The
CRC code is generated using the following polynomial X
16
+ X
12
+ X
5
+ 1.
1:1 Protocol
Refer to Tag Memory Error Correction for details on memory checks.
p. 94
Process designation Specifies the check process.
“C”: Check code verification
“K”: Check code calculation
Antenna designation Specifies the Antenna with which to communicate.
“1”: Antenna 1
“2”: Antenna 2
Check block start address Specifies the start address of the check block in 4-digit hexadecimal.
Setting range: 0000
H to FFFDH
No. of check block bytes Specifies the number of bytes in the check block in 2-digit hexadecimal.
Setting range: 00
H, 03H to FFH (Specify 00H for 256 bytes.)
Specify the number of bytes in the check code calculation area plus two for the number of check
block bytes.
Refer to Tag Memory Error Correction for details.
p. 94
End code Indicates the execution result for the command.
00: Normal end
75: Data normal (only when verification is performed)
76: Data error warning (only when verification is performed)
Refer to List of End Codes for information on other end codes.
p. 235
MD
C/K 1/2
211 4
2
* CR
2
Command
code
Terminator
Antenna
designation
×
Check block
start address
No. of check
block bytes
Process
desig-
nation
×
×
×
×
×
Command
Response
MD
22
2
* CR
Command
code
Terminator
End code
××
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