Omron V680-HAM91 User Manual page 177

Timing Charts : Mode2
Trigger Mode 2: Read
Mode setting switch settings
RF Tag position
INHIBIT/TRIG
Communications
with RF Tag
R/W input
Data output
(OD0 to OD15: 16 bits)
Access Address : 0010 hex
Output Time : 50 ms
NORMAL/STRB
ERR output
Data Display LED
(0 to 15: 16 bits)
A. Preparations
Normal Completion of Communications with RF Tag
B. Start of communications
C. End of communications
D. Clearing results
F. Clearing data
Error Completion of Communications with RF Tag
E. Start of communications
F. End of communications
G. Clearing results
H. Clearing data
• At least 10 ms is required for INHIBIT/TRIG input.
• Wait at least 10 ms after switching the R/W input line before performing next process.
• Read the data output(OD0 to OD15) after the NORMAL/STRB output turns ON. The NORMAL/STRB output and ERR output
will be held until the next time the trigger is turned ON if the output time setting switch is set to CONTINUOUS.
In communications
range
10 ms min.
Read-
ing
Previous data output
Data output
3 ms t ms
Previous data
Read data display (green)
display (green)
A B C D
Normal completion
Before starting communications with the RF Tag, turn OFF the R/W input.
Turn ON the INHIBIT/TRIG input to start communications with the RF Tag after confirming the RF
Tag is in the communications area of the Antenna.
If communications with the RF Tag are completed normally, the ID Flag Sensor will turn ON the
NORM/STRB output, store the parity value in the PARITY output, and store the read data in the
data output bits (OD0 to OD15). The Data Display LED(0 to 15) corresponding to the read data
will be lit green.
The NORMAL/STRB output will be turned OFF after the time set for the fixed time in the output
mode time setting has elapsed.
The data output bits(OD0 to OD15) and the Data Display LED(O to 15) wil be held until nxt data is
output.
Turn ON the INHIBIT/TRIG input to start communications with the RF Tag.
If communications with RF Tag are completed with an error(No RF Tag error), the ID Flag Sensor
will turn ON"0" the ERR output, and turns OFF all the bits in the data output bits(OD0 to OD15).
The Data Display LED(0 to 15) corresponding to the error code will lit red.
The ERR output will be turned OFF"1" after the time set for the fixed time in the output mode time
setting has elapsed.
The data output bits(OD0 to OD15) and the Data Display LED(O to 15) wil be held until nxt data is
output.
In communications range
Read- Read-
ing ing
0
3 ms
3 ms
t ms
Error code display (red) Read data display (green)
E F G H
Completion with error
Section 7
Appendices
Data output
t ms
RFID System
175
User's Manual