NEC RS-232C 用户手册
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5.3 Set parameter
Send this message to change monitor
’s adjustment and so on.
The controller requests a monitor to change value.
1
st
byte) STX: Start of Message
ASCII STX (02h)
2
nd
-3
rd
bytes) OP code page: Operation code page
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)
OP code page
OP code
Set Value
STX
Hi
Lo
Hi
Lo
MSB
LSB
ETX
1
st
2
nd
-3
rd
4
th
-5
th
6
th
-9
th
10
th