Omron V600 Series User Manual

116
Section 5 Communications Commands
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.
p.68
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.
p.68
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 End Codes for more information.
p.135
xx
Command code
MD
xx
C/K 1/2
xx
211 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
MD
xx
22
2
*CR
Terminator
End code

Omron V600 Series Specifications

General

Operating Frequency	13.56 MHz
Supported Standards	ISO 15693, ISO 18000-3
Read Range	Up to 70 mm (depending on tag and environment)
Power Supply	24 VDC ±10%
Operating Temperature	-10 to 55°C (with no icing or condensation)
Humidity	35% to 85% (non-condensing)
Communication Interface	RS-232C