Omron V500-R521B2 User Manual page 41

Section 3
Function Explanation
Communication timing chart
This section explains the indication timing of the buzzer and LED indication.
In case when reading OK (single reading)
Trigger
input (*1)
Laser
radiation
Reading
operation
Buzzer,
LED
Communi-
cation
*1 You can change the setting for the trigger input logic.
p.53
Time
T0
T1
T2
T3
T4
• In case of continuous reading and plural reading, laser is always radiating during trigger input is ON
• A rough guide of reading time
• Concept of communication time
Communication
time (ms) =
V500-R521B2/C2
42
User's Manual
Reading
Trigger ON time. (When effective duration is designated, consider it as effective duration.)
Chattering prevention time. (5 ms)
Buzzer and indication LED illumination time. (Initial value: 200 ms, changing allowed)
Trigger signal minimum OFF time. Be sure to set 30 ms or more.
Communication time. Differs according to communication condition.
(or during reading effective duration). Concept of T0 to T4 other than this is the same as the case of
single reading.
As this bar code reader is approx. 500 decode/sec., decode process time for once is 2 ms. In case
of plural time conformance, "2 ms x (conformance time + 1)". However, it differs according to the
reading bar code condition (dirt or thin spot, etc.)
(Data length) + (1: In case when parity exists) + (Number of stop bit)
Description
(Communication speed)
(Number of digit of transmission data +
x
Number of header characters +
Number of footer characters) x 10 3