
B-63322EN-1/01 4. PROTOCOL A
-21-
a) Protocol A
b) Expansion protocol A
<Example of use>
The host computer handles an EOB code in an NC program as “;” and
transmits it to the CNC as is. When ‘3’ and ‘B’ (= 3BH) are specified
in SET command bytes 45 and 46, and ‘ ’ and ‘A’ (= 0AH) are
specified in bytes 47 and 48, “;” is converted to “LF” which is then
transmitted to the CNC.
2) Data part of SET
The format of data part of command <SET> is the same as that
of data part of <SAT> except the following points.
Data part can be abbreviated when no parameter is modified.
Byte
position
Meaning and code Remarks
1 Switching request of remote/tape operations
2 Status of host computer Ignore
3 - 8 Not used
9 - 48 Modified value of parameter
49 - 54 Not used
55 - 56 Parameter for expansion protocol
57 - 72 Not used
3) Data part of DAT
Up to 4096 bytes of NC data can be received at the data part of
command <DAT>.
Transmit the NC data depending on the specifications of NC
since no data process is performed in the remote buffer other
than the conversion code set by the parameter.
Also, always add the EOR code to the end of NC program.
Data
ETX
SUM
DAT
//
//
Section to be converted
Data
ETXSUM
//
//
No
Section to be converted