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PJL9371ViewSonic 67
RS-232C Communication (continued)
Communicaion settings
1. Protocol
19200bps,8N1
2. Command format
("h" shows hexadecimal)
Byte Number
0 1 2 3 4 5 6
7 8 9 10 11 12
Command
Action
Header Data
Header
code
Packet
Data
size
CRC
ag
Action Type
Setting
code
L H L H L H L H L H L H
<SET>
Change setting to
desired value [(cL)(cH)]
by [(eL)(eH)].
BEh EFh 03h 06h 00h
(aL) (aH) 01h 00h (bL) (bH) (cL) (cH)
<GET>
Read projector
internal setup value
[(bL)(bH)] .
(aL) (aH) 02h 00h (bL) (bH) 00h 00h
<INCREMENT>
Increment setup value
[(bL)(bH)] by 1.
(aL) (aH) 04h 00h (bL) (bH) 00h 00h
<DECREMENT>
Decrement setup value
[(bL)(bH)] by 1.
(aL) (aH) 05h 00h (bL) (bH) 00h 00h
<EXECUTE> Run a
command [(bL)(bH)].
(aL) (aH) 06h 00h (bL) (bH) 00h 00h
[Header code] [Packet] [Data size]
Set [BEh, EFh, 03h, 06h, 00h] to byte number 0
~
4.
[CRC ag]
For byte number
5, 6,
refer to
RS-232C Communication command table
.
[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 table.
[Type] [Setting code]
For byte number
9
～
12
, refer to
RS-232C Communication command table
.