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5. NON PROCEDURE
PROTOCOL
COMMUNICATION
MELSEC QnA
5.8 ASCIIHBIN Conversion
5.8.1
What is ASCIIe=BIN conversion?
The QC24 converts the ASCII data received from an external device to binary data and stores the
binary data to its buffer memory. The PC CPU converts the designated binary data to ASCII data
and sends the ASCII data to the external device.
This function is called "ASCll++BIN conversion".
Data communications matched to the specifications of the external device can be easily imple-
mented by designating QC24 buffer memory address 121 H. A data exchange program is unnec-
essary.
1
Binary data communications
I
k
The PC CPU handles blnary data.
An ASCllttBlN conversion
program is necessary,
ASCII data communications
Binary data
ASCII data
PC CPU
s
The PC CPU handles binary data
The QC24 performs ASCllttBlN
An ASCllttBlN
conversion and wrltes buffer memory
conversion program
address
121
H j " 1
" .
IS
unnecessary
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