Hakko Electronics Monitouch V Series, Справочное руководство

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Chapter 16 Barcode
16-4
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I/F Memory
The allocation of I/F memory is shown below:
1. Flag / number of data read
•
Type: JAN/ITF/CODABAR/CODE39
•
Type: ANY
1) Communication error (bit 14)
When an error has occurred in the communication between the barcode
reader and MONITOUCH, bit 14 shows “1.” Check parameter settings
on the barcode reader and the V-SFT editor and also check cable
connection.
2) Reading complete (bit 12)
When data from barcode reader is received and written to the I/F
memory, bit 12 (reading complete) shows “1.” Check that the bit is set,
and receive the next data. To read next barcode data, reset the bit to “0”
when the data has been read.
3) Number of data read
The number of bytes read by the barcode reader is written.
2. Data read
Barcode data is converted into ASCII code and is stored in these areas.
As many as the bytes read are stored.
(“0” (null code) is attached to the last.)
•
Type: JAN/ITF/CODABAR/CODE39
•
Type: ANY
Memory Contents Memory Contents
n Flag / number of data read n Flag
n + 1
n + m
Data read
n + 1 Flag / number of data read
n + 2
n + m
Data read
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0
(3) Number of data read
(Bytes 0 to 256)
(2) Reading complete
(1) Communication error
n
Be sure to reset the bits not in use to “0.”
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0
(2) Reading complete
(1) Communication error
n
(3) Number of data read (bytes: 0 to 2048) n + 1