40
Sec
RF Tags
RFID System
User's Manual
Section 2
Specifications and Performance
Use at high temperatures (V680-D1KP58HTN)
Data retention
• Data stored in memory in the RF Tag may be lost due to the characteristics of EEPROM, if the accumu-
lated usage time of the RF Tag at a high temperature over 125
°
C exceeds 10 hours after writing data to
the RF Tag. Reset the data retention time before the accumulated usage time exceeds 10 hours.
• An error in communications between the Antenna and the RF Tag may occur in an environment where
the ambient operating temperature is 85
°
C or higher. Do not communicate between the Antenna and
the RF Tag in an environment where the ambient operating temperature is 85
°
C or higher.
• The UID (unique identification number for each RF Tag) may be lost due to the characteristics of
EEPROM when the RF tag is used at a high temperature over 125
°
C. Do not use the commands
using UID at a high temperature over 125
°
C.
•Do not use the READ ID command (command code: ID).
•Do not make the UID Addition Setting (command code: US).
•Communications specifications (FIFO trigger, FIFO repeat, multi-access trigger, multi-access repeat,
and selective) can not be used.
• Accumulated time
• Resetting the data retention time
<When using the RF Tag addresses 0010Hex to 0015Hex.>
1.Reading data from the RF tag addresses 0010Hex to 0015Hex.
2.Read data written to the RF tag addresses 0010Hex to
0015Hex..
Data retention is reset only data written to the RF tag address.
If you reset the data retention, writes the same data to all of the tag memory in use.
Command
: RDSTH100100006*[CR]
Reseponse
: RD0010001122334455*[CR]
Command
: WTSTH10010001122334455*[CR]
Reseponse
: WT0010*[CR]
1 hour
at 25°C
1 hour
at 25°C
3 hours
at 25°C
2 hours
at 25°C
1 hours
at 25°C
3 hours
at 25°C
㪘㪺㪺㫌㫄㫌㫃㪸㫋㪼㪻㩷㫋㫀㫄㪼䋺㩷㪈㩷㪿㫆㫌㫉
㪘㪺㪺㫌㫄㫌㫃㪸㫋㪼㪻㩷㫋㫀㫄㪼䋺㩷㪋㩷㪿㫆㫌㫉㫊
㪮㫉㫀㫋㫀㫅㪾㩷㪻㪸㫋㪸㩷㫋㫆㩷㫋㪿㪼㩷㪩㪝㩷㫋㪸㪾㩷
㫄㪼㫄㫆㫉㫐㩷㫀㫅㩷㫌㫊㪼㪅
Reset the data
retention time.
Leaving time other than high temperature environment
is not included in the cumulative time used.
*1.
*1. High temperatures are those exceeding 125
°C
up to 250
°C
.
Reset the data
retention time.
Fig. Concept of resetting the data retention time
1 hour at high
temperatures
*1.
3 hours at high
temperatures
2 hours at high
temperatures
*1.
*1.
3 hours at high
temperatures
2 hours at high
temperatures
*1.
㪘㪺㪺㫌㫄㫌㫃㪸㫋㪼㪻㩷㫋㫀㫄㪼䋺㩷㪍㩷㪿㫆㫌㫉㫊
㪘㪺㪺㫌㫄㫌㫃㪸㫋㪼㪻㩷㫋㫀㫄㪼䋺㩷㪐㩷㪿㫆㫌㫉㫊
㪘㪺㪺㫌㫄㫌㫃㪸㫋㪼㪻㩷㫋㫀㫄㪼䋺㩷㪋㩷㪿㫆㫌㫉㫊
0010
Hex
0011
Hex
0012
Hex
0013
Hex
0014
Hex
0015
Hex
00
Hex
11
Hex
22
Hex
33
Hex
44
Hex
55
Hex
Reading data from the RF
tag memory in use.
<RF tag memory>
0010
Hex
0011
Hex
0012
Hex
0013
Hex
0014
Hex
0015
Hex
00
Hex
11
Hex
22
Hex
33
Hex
44
Hex
55
Hex
Read data written to the RF
tag memory in use.
<RF tag memory>