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5. NON
PROCEDURE
PROTOCOL
COMMUNICATION
MELSEC QnA
Bar code reader setting
flOKEN CO.. LTD. TCD-4000rTBR-4000)
Baud rate 4800bps
I
Transmission specifications
I
a) RS-232C interface
b) 7-bit ASCII code
c) Data specifications
Asynchronous
Start bit
................
1
bit
.
Data
.....................
7 bits
Parity (even)
.........
1 bit
Stop bit
................
2 bits
d) Baud rate 300-1 9200(bps) selectable
I
Data format sent from bar code reader
1
Header frame
(frame
No.
2)
-
Trailer frame
(frame No. 3 1
-
Written to QC24 as default frame
5
-
22
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