Hitachi CPX7 Manuel D'utilisation page 89

Communication 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 the command table above.
to
[Type], [Setting code]
For byte number
("h" shows hexadecimal)
0 1 2
Header
code
Packet
L H
BEh EFh 03h
5, 6, RS-232C Communication command table
refer to
9 〜 12 RS-232C Communication command table
, refer to
RS-232C Communication (continued)
3 4 5
Header
Data CRC
size flag
L H L
(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
6 7 8 9 10
Data
Action Type
H L H L H
11 12
Setting
code
L H
.
.
9