44
Sec
tion
3
Oper
ation
Flow Cha
rt
V500-R521B2/C2
User’s Manual
Section 3
Function Explanation
Concept of moving direction/line speed
When reading a moving bar code, fully investigate from the following viewpoint.
Confirmation of the timing chart
Duration from the reading trigger and outputting the data of actual reading differs
according to condition.
Operation Flow Chart p.38
Confirmation of trigger input timing
When constructing the system to read the moving bar code, input timing of the external
trigger signal is important. Input the external trigger signal allowing enough timing
considering the moving speed (moving distance) of the bar code.
Checking the tack timing
In case when bar codes come continuously, calculate how close the bar codes may
come, considering above two points.
Photoelectronic
sensor
The bar code is already
passed and cannot read.
When the timing is too slow...
V500-R521.book 44 ページ ２００８年７月１８日 金曜日 午後１時１分
