10
8
th
-9
th
bytes) Type: Operation type code
00h: Set parameter
01h: Momentary
Like the Auto Setup function which automatically changes the parameter.
This returned value from the monitor is encoded to ASCII characters.
Ex.) The byte data 01h is encoded to ASCII character '0' and '1' (30h and 31h).
10
th
-13
th
bytes) Max. value: Maximum value which monitor can accept. (16bits)
This returned value from the monitor is encoded to ASCII characters.
Ex.) '0','1','2' and '3' means 0123h (291)
14
th
-17
th
bytes) Current Value: (16bits)
This returned value from the monitor is encoded to ASCII characters.
Ex.) '0','1','2' and '3' means 0123h (291)
18
th
byte) ETX: End of Message
ASCII ETX (03h)
5.2.3. 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 5.3.1.
“
VCP (OP code page/OP code) List
”
.
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 5.3.1.
“
VCP (OP code page/OP code) List
”
.
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)
5.2.4. "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)
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
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