Omron V680-CA1D User Manual page 73

OVERWRITE COUNT CONTROL (MDS/MDL)
This command is used to control the number of overwrite operations performed by Tags. Whether the
EEPROM overwrite count has been exceeded or not is determined by refreshing the user-specified
overwrite count control area.
Command
Command
Controller No.
code
× ×
@ M
3 2
Name
Mode setting Specifies the mode for the overwrite count.
S: User-specified overwrite count using subtraction method (16,700,000 max.)
L: Fixed overwrite count of 100,000 using addition method
Channel designation Always 1
Start address Specifies the start address of the overwrite count control area in 4-digit hexadecimal.
Setting range: 0000h to 03E5h
Number of refreshes Specifies the number of refreshes in 2-digit hexadecimal.
Setting range: 00h to FFh (00: Checks number of refreshes only)
Set the start address between @@@0H and @@@5H or between @@@8H and @@@DH. If the start address is set
between @@@6H and @@@7H or between @@@EH and @@@FH, an address error (error code: 7A (hexadecimal)) will
be returned in the end code.
Response
Controller No. Command code
× ×
@ M
3 2
Name
End code Indicates the execution result for the command.
75: Specified overwrite count not exceeded
76: Specified overwrite count exceeded warning
• Example
Setting an overwrite count of FF times using subtraction Controller No. 2 address 0010h.
Command
Command
Controller No. code
0 2 M
@
3 2
Response
Controller No. Command code
0 2 M
@
2
3
Mode
Channel
setting Start address
designation
× ×
D S/L 1
1 1
End code FCS
× ×
7 5
D
2 2
Mode Channel
setting designation Start address
D S 1 0 0
1 1
End code FCS
D 7 5 4 9
2 2
Reading from/Writing to Tags
Number of
refreshes
× ×
× ×
4 2
Details
Terminator
*
CR
2
Details
Number of
refreshes
1 0 F F
2
4 2
Terminator
*
CR
2
Heat-resistive RFID System
Section 4
FCS Terminator
× × *
CR
2 2
FCS Terminator
*
CR
8
2 2
User's Manual
71