User`s manual

93
RFID System
User's Manual
Section 3
V600 Commands
Section 3
Commands
■ DATA CHECK (MDC/K)
This command writes or compares the CRC code using the specified check block unit. The CRC code
is calculated from the generated polynomial expression X
16
+ X
12
+ X
5
+ 1.
For details on the memory check, refer to Memory Check Function in ID Tag.
p.111
Process setting Specifies the check process.
K: Check code calculation
C: Check code comparison
Processing area number
setting
Always 1.
Check block start
address
Specifies the start address of the check block in 4-digit hexadecimal.
Setting range: 0000 to FFFD hex
Number of check block
bytes
Specifies the number of bytes in the check block in 2-digit hexadecimal.
Setting range: 00, 03 to FF hex (00 = 256 bytes)
The number of check block bytes is the check code calculation area + 2 bytes.
For details, refer to Memory Check Function in ID Tag.
p.111
End code Indicates the execution result for the command.
The end code 00 indicates normal completion.
For details on end codes, refer to End code List.
p.104
Command
××
MD
××
C/K 1
××
211 4
2
CR
2
Check block
start address
Terminator
Number of check
block bytes
Command
code
Process
setting
Processing
area
number
setting
Response
MD
××
22
2
CR
Command
code
TerminatorEnd code