5-1
Section
Read Operation in AUTO Mode
62
5-1
Read Operation in AUTO Mode
In AUTO mode, the Data Carrier (DC) can always be accessed when the
INHIBIT input is ON while the V600-HAM42-DRT power is ON. Therefore the
Data Carrier is automatically accessed when the Data Carrier enters the trans-
mission area, with no need for a simultaneous trigger (TRG) input.
Read data will be output with the data output signal while the Data Carrier is with-
in range.
If the Data Carrier is stopped within the transmission area after reading is ac-
cessed, it will not be accessed again. After the Data Carrier goes out of the trans-
mission area, or after operation is stopped by the INHIBIT input turning OFF, the
Data Carrier will revert to wait status.
Data Carrier position
Data Carrier accessed
Address input
INHIBIT input
HS output
NORMAL output
R/W input
ERROR output
Data output
Data input
Data LED indicators
Address designation input
All 0
Data (1)
Data (2)
Data (3)
Previous data
output
None
lit
Data (1) display
(DC de-
tected)
Read executed (1)
(DC de-
tected)
Read executed (2)
(DC de-
tected) Read executed (3)
All 0
All 0
None
lit
Data (2) display
None
lit
Data (3) display
t
auto
Inside the area
Inside the area
Outside the area
Don’t Care
“0”
(DC de-
tected)
The output time t
auto
is the time that the Data Carrier is in the transmission area.
If this time (t
auto
) is shorter than the output time set by pin 1 of DIP switch 2 (out-
put mode), the output will continue during the output time. (When the DIP switch
pin is OFF, the output time is 100 ms; when ON, the output time is 500 ms.)