NEC RS-232C - Manual (Page 9)

(9/50)
This OP code page data must be encoded to ASCII characters.
Ex.) The byte data 02h must be encoded to ASCII '0' and '2' (30h and 32h).
Refer to the Operation code table.
4 th -5 th bytes) OP code: Operation code
This OP code data must be encoded to ASCII characters.
Ex.) OP code 1Ah -> OP code (Hi) = ASCII '1' (31h)
OP code (Lo) = ASCII 'A' (41h)
Refer to the Operation code table.
6 th -9 th bytes) Set value : (16bit)
This data must be encoded to ASCII characters.
Ex.) 0123h -> 1
st
(MSB) = ASCII '0' (30h)
2 nd = ASCII '1' (31h)
3 rd = ASCII '2' (32h)
4 th (LSB) = ASCII '3' (33h)
10 th byte) ETX: End of Message
ASCII ETX (03h)
5.4 "Set parameter" reply
The Monitor echoes back the parameter and status of the requested operation code.
1 st byte) STX: Start of Message
ASCII STX (02h)
2
nd
-3
rd
bytes) Result code
ASCII '0''0' (30h, 30h): No Error.
ASCII '0''1' (30h, 31h): Unsupported operation with this monitor or unsupported operation under
current condition.
4 th -5 th bytes) OP code page: Echoes back the Operation code page for confirmation.
Reply data from the monitor is encoded to ASCII characters.
Ex.) OP code page 02h -> OP code page = ASCII '0' and '2' (30h and 32h)
Refer to Operation code table.
6 th -7 th bytes) OP code: Echoes back the Operation code for confirmation.
Reply data from the monitor is encoded to ASCII characters.
Ex.) OP code 1Ah -> OP code (Hi) = ASCII '1' (31h)
OP code (Lo) = ASCII 'A' (41h)
Refer to Operation code table
8 th -9 th bytes) Type: Operation type code
Result OP code page OP code Type Max value
Requested setting
Value STX
Hi Lo Hi Lo Hi Lo Hi Lo MSB LSB MSB LSB
ETX
1 st 2 nd -3 rd 4 th -5 th 6 th -7 th 8 th -9 th 10 th -13 th 14 th -17 th 18 th