Omron V680-CA5D01-V2 User Manual page 220

OVERWRITE COUNT CONTROL (MD S/L)
The OVERWRITE COUNT CONTROL command is used to manage overwrite counts for EEPROM
Tags.
The specified overwrite count control area data is updated to enable determining when the EEPROM's
write life has expired.
1:1 Protocol
Command
Antenna
designation
Mode
desig-
Command
code nation Area start address
× ×
M D S/L 1/2
2 1 1 4
Mode designation
Antenna designation
Area start address
Decrement count
Note: The write life for EEPROM Tags is 300,000 writes at 40 ° C.
When set to @@@6
H
the end code.
Response
Command
End code Terminator
code
*
M D 7 5 CR
2 2 2
End code
Decrement
Terminator
count
*
× × × ×
CR
2 2
Specifies the check process.
"S": Subtraction (Overwrite control count can be set by user.) (16,700,000 writes max.)
(See note.)
"L": Addition (Overwrite control count fixed at 100,000 writes.)
Specifies the Antenna with which to communicate.
"1": Antenna 1
"2": Antenna 2
Specifies the start address of the overwrite count control area in 4-digit hexadecimal.
Setting range: @@@0 to @@@5
H
Specifies the number of refresh operations in 2-digit hexadecimal.
Setting range: 00 to FF (00 : Performs overwrite count check only)
H H H
Refer to Tag Service Life Check for details.
p. 91
to @@@7H or @@@E to @@@F
H
Indicates the execution result for the command.
75: Normal end
76: Data error warning
Refer to List of End Codes for information on other end codes.
p. 235
or @@@8 to @@@D
H H H
, an address error (code: 7A (hexadecimal)) will be returned as
H
SECTION 5
Communications
RFID System
217
User's Manual