106
Section 3
V6
00
C
o
mm
an
d
s
RFID System
User's Manual
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 RF Tag
.
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 RF Tag
End code
Indicates the execution result for the command.
The end code 00 indicates normal completion.
For details on end codes, refer to
Command
×
×
M
D
×
×
C / K
1
×
×
2
1
1
4
2
C R
2
Check block
start address
Terminator
Number of check
block bytes
Command
code
Process
setting
Processing
area
number
setting
Response
M
D
×
×
2
2
2
C R
Command
code
Terminator
End code
Содержание V680 Series
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