ViewSonic XGA PJL9371 Guida Dell'utente page 72

Communicaion settings
1. Protocol
19200bps,8N1
2. Command format
Byte Number
Command
Action
<SET>Change setting to
desired value [(cL)(cH)]
by [(eL)(eH)].
<GET>Read projector
internal setup value
[(bL)(bH)] .
<INCREMENT>
Increment setup value
[(bL)(bH)] by 1.
<DECREMENT>
Decrement setup value
[(bL)(bH)] by 1.
<EXECUTE> Run a
command [(bL)(bH)].
[Header code] [Packet] [Data size]
Set [BEh, EFh, 03h, 06h, 00h] to byte number 0 ~ 4.
[CRC flag]
For byte number
[Action]
Set functional code to byte number 7, 8.
<SET> = [01h, 00h], <GET> = [02h, 00h], <INCREMENT> = [04h, 00h]
<DECREMENT> = [05h, 00h], <EXECUTE> = [06h, 00h]
Refer to the Communication command
[Type] [Setting code]
For byte number
ViewSonic
("h" shows hexadecimal)
0  
Header
Header
code
Packet
L H
BEh EFh 03h
5, 6, RS-232C Communication command
refer to
9 ～ 
RS-232C Communication command
, refer to
RS-232C Communication (continued)
3 4 5 6
Data CRC
size flag
L H L H
(aL) (aH) 01h 00h (bL) (bH) (cL) (cH)
(aL) (aH) 02h 00h (bL) (bH) 00h 00h
06h 00h
(aL) (aH) 04h 00h (bL) (bH) 00h 00h
(aL) (aH) 05h 00h (bL) (bH) 00h 00h
(aL) (aH) 06h 00h (bL) (bH) 00h 00h
table.
67
7 8 9 0 
Data
Setting
Action Type
L H L H
table.
table.
PJL9371

code
L H