Omron V500-R521B2, User Manual

Page: 104 / 127

106
Sec
tion
5
How to Use Command
L
in
k
Un
it
V7
00-
L1
2
V500-R521B2/C2
User’s Manual
Section 5
Example of System Configuration
„ Polling (P)
When the transmission procedure is "Normal procedure (polling procedure)", transmit
the oldest data in the buffer as a response.
ƒ Input command
ƒ Response
When there is data in buffer
When there is no data in buffer
In case of "Through procedure (normal output procedure)", no response is output even
if command is input.
„ Resend request (R)
The response sent before is transmitted again.
ƒ Input command
ƒ Response
$01 $10 P $0D
(Check code) (Machine No.)
$0D
(Check code)
(Machine No.)
Communication data with the bar code reader $01
$01 7 4 $0D
(Check code)
(Machine No.)
Code indicating that there is no data
$01 $10 R $0D (Check code) (Machine No.)
$01
$0D (Check code)
(Machine No.)
Communication data with the bar code (same as immediately before)
V500-R521.book 106 ページ ２００８年７月１８日 金曜日 午後１時１分