Omron V500-R521B2 User Manual page 92

Section 5
Example of System Configuration
Operation flow chart
Each bar code reader reads bar codes when the trigger is input. Read data is
transmitted to the unit and stored in a buffer inside the link unit.
When the data export command (polling command) is transmitted from the upper
equipment, the link unit transmits the stored read data to the upper equipment.
PC/AT compatible PC
Reading trigger
Data export of Machine
Data export of Machine
Data export of Machine
Data export
V500-R521B2/C2
94
User's Manual
Communication converter
Machine
Link unit
Bar code reader
Execution of
Bar code reader
Link unit
Stores data
Polling
Link unit
No. 1
Polling
No. 2
Polling
No. 3
End
Machine
No. 01
No. 02
Execution of
reading
reading
Stores data
Returns data
Link unit
Returns data
Machine
No. 03
Execution of
reading
Stores data
Link unit
Returns data