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Se
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Communica
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Comma
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RFID System
Operation Manual
Section 5
Communications
MANAGEMENT DATA CHECK/CALCULATE (MDC/MDK)
These commands make it possible to write and verify the CRC code in a check block that the user des-
ignates. The CRC code is calculated using the formula X
16
+ X
12
+ X
5
+ 1.
■
1:1 Communications
Refer to
Data Carrier Memory Check Function
for details on memory checks.
Process specification
Specifies the check processing to perform.
C: Compare check code
K: Calculate check code
R/W Head No.
Specifies the Read/Write Head with which to communicate.
1: Read/Write Head 1
2: Read/Write Head 2
Check block start address
Specifies the first address of the check block as a four-digit hexadecimal number.
Specifiable range: 0000H to FFFDH
No. of check block bytes
Specifies the number of bytes in the check block as a two-digit hexadecimal number.
Specifiable range: 00H and 03H to FFH (The maximum of 256 bytes will be read if 00H is speci-
fied.)
Specify two bytes more than the number of bytes in the area for which the check code is calcu-
lated.
Refer to
Data Carrier Memory Check Function
for details.
Terminator
Indicates the results of command execution.
00: Normal end
75: Data normal (only when comparing check codes)
76: Data error warning (only when comparing check codes)
Refer to
for more information.
x
x
Command code
M
D
x
x
C/K
1/2
x
x
2
1
1
4
Check block start address
2
*
CR
Terminator
2
No. of check
block bytes
Process
specifi-
cation
R/W Head No.
Command
Response
Command code
M
D
x
x
2
2
2
*
CR
Terminator
End code
Summary of Contents for V600 Series
Page 50: ...48 Section 2 Wiring RFID System Operation Manual Section 2 Installation and Wiring MEMO ...
Page 72: ...70 Section 4 Write Command Memory RFID System Operation Manual Section 4 Function ...
Page 138: ...136 Section 5 End Codes RFID System Operation Manual Section 5 Communications MEMO ...