1 0
RS-232C Communication (continued)
Communication settings
1. Protocol
19200bps, 8N1
2. Command format
("h" shows hexadecimal)
B y t e Nu m b e r
0
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
Co m m a n d
Ac t i o n
H e a d e r
D a t a
H e a d e r
co d e
P a c k e t
D a t a
s i z e
CRC
flag
Act i o n
T yp e
Se t t i n g
co d e
L
H
L
H
L
H
L
H
L
H
L
H
< SE T >
Change setting to
desired value [(cL)(cH)]
b y [ ( b L) ( b H ) ] .
BEh EFh
03h 06h 00h
( a L) ( a H )
01h 00h
( b L) ( b H ) ( c L) ( c H )
< G E T >
Read projector
internal setup value [(bL)
( b H ) ] .
( a L) ( a H )
02h 00h
( b L) ( b H )
00h 00h
< I NCRE M E NT >
Increment setup value
[ ( b L) ( b H ) ] b y 1 .
( a L) ( a H )
04h 00h
( b L) ( b H )
00h 00h
< D E CRE M E NT >
Decrement setup value
[ ( b L) ( b H ) ] b y 1 .
( a L) ( a H )
05h 00h
( b L) ( b H )
00h 00h
< E X E CU T E > Ru n a
co m m a n d [ ( b L) ( b H ) ] .
( a L) ( a H )
06h 00h
( b L) ( b H )
00h 00h
[ H e a d e r c o d e ] [ P a c k e t ] [ D a t a s i ze ]
Set [BEh, EFh, 03h, 06h, 00h] to byte number 0 to 4.
[CRC flag]
F o r b yt e n u m b e r
5, 6,
r e f e r t o
RS-232C Co m m u n i c a t i o n / Ne t w o r k c o m m a n d
t a b l e
(
&
18
)
.
[ A c t i o n ]
Set functional code to byte number 7, 8.
< SE T
> = [01h, 00h], <
G E T
> = [02h, 00h], <
I NCRE M E NT
> = [04h, 00h]
< D E CRE M E NT
> = [05h, 00h], <
E X E CU T E
> = [06h, 00h]
Refer to the Communication command table
(
&
above
) .
[Type] [Setting code]
For byte number 9 to 12, refer to
RS-232C Co m m u n i ca t i o n / Ne t w o r k
co m m a n d t a b l e
(
&
18
)
.