36
Sec
tion
3
Ex
planat
ion of
Rea
d
ing Syst
em
V500-R521B2/C2
User’s Manual
Section 3
Function Explanation
Explanation of Reading System
There are following reading systems for this bar code reader.
Setting method p.67
*1
Effective duration of reading
When the trigger input method is external trigger signal effective duration designation system or RS-232C
command, effective duration setting is required beforehand. Effective duration is set by combining "effective
duration" from 0 to 10 sec. and "minor setting" from 0 to 750 ms.
E.g. 1: When you want to set the effective duration to 2.5 sec., set the effective duration to 2 sec. and the
minor setting to 500 ms.
E.g. 2: When you want to set the effective duration to 0.7 sec., set the effective duration to 0 sec. and the
minor setting to 700 ms.
E.g. 3: When you want to set the effective duration to 10.0 sec., set the effective duration to 10 sec. and the
minor setting to 0 ms.
Effective duration setting method p.70
Reading system
Trigger reading
Full-time reading
Reading starts by applying reading trigger
from outside.
This system is mainly used when operation.
During the power is turned on, laser is
radiated all the time, to be able to read
any time. This system is mainly used at
installation and system testing.
Trigger
Input method
External
trigger
signal
When the external trigger signal is turned
on, laser radiates and starts reading. The
"Trigger controlled system" reads during
the trigger is ON, and the "Effective
duration designation system" reads only the
effective duration (*1) which is set
beforehand after the trigger is ON.
–
(Ignored even when input.)
RS-232C
command
The upper equipment sends the
communication command and the laser
beam radiates to start reading. After
receiving the command, it reads only for the
effective duration (*1) which is set
beforehand.
–
(Ignored even when input.)
TEST
button
(Back side)
Press the TEST button once to read once.
Handy to use to check if the reading
condition setting is appropriate.
–
(Ignored even when pressed.)
Reading
operation
(*2)
Single
reading
When the reading succeeds, the data is
output and ends reading automatically.
Reads continuously and outputs the data
continuously.
Plural
reading
Reads bar codes continuously during the
trigger is ON or effective duration (*1).
When the first reading is completed, data is
once output and while reading the same
bar codes continuously, no output is made.
Outputs newly only when the data differ
from the adjacent bar code.
The bar code reading continues in series.
While reading the same bar code, output
is not newly made. Outputs newly only
when the data differ from the adjacent bar
code.
Continuous
reading
Reads bar codes continuously during the
trigger is ON or effective duration (*1).
Outputs data continuously even for the
same bar code.
Reads continuously and outputs the data
continuously.
V500-R521.book 36 ページ ２００８年７月１８日 金曜日 午後１時１分
