Omron V400-R1CF User Manual page 37

Section 2
Introduction Procedure
Investigation into the reading timing
This reader uses the "trigger reading" system. Trigger reading uses the following trigger
input systems and reading operations.
Setting method p.68
Reading system
Trigger input method
Reading operation
* 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. The effective duration is set between 0 and 10
seconds.
Effective duration setting method p.69
V400-R1CF/R1CS
36
User's Manual
Reading is executed by applying a reading trigger from outside.
External trigger Reading starts when the external trigger signal is turned on. The
signal "Trigger controlled system" performs reading while the trigger is ON,
and the "Effective duration designation system" performs reading only
for the predetermined effective duration (*) that starts when the trigger
is ON.
RS-232C command Reading starts when the communication command is sent from the
upper equipment. After receiving the command, the reader performs
reading only for the effective duration (*) you have set beforehand.
Single reading When the reading succeeds, the reader outputs the data and finishes
the reading operation.
Plural reading The reader reads codes continuously while the trigger is ON or for the
effective duration (*). When the first reading is completed, the data is
output once. While the reader is reading the same code continuously,
it outputs no data. The reader outputs data only when the new data
differs from that of the previous code.
Continuous reading The reader reads codes continuously while the trigger is ON or for the
effective duration (*). The reader outputs data even if it reads the same
code.
Trigger reading