Hitachi CP-X8170 User Manual page 11

Communicaion settings
1. Protocol
19200bps, 8N1
2. Command format
Byte Number
Command
Action
<SET>Change setting to
desired value [(cL)(cH)]
by [(bL)(bH)].
<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 to 4.
[CRC flag]
For byte number
table (&19).
[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 to 12, refer to
command table
("h" shows hexadecimal)
0 1 2
Header
code
Packet
L H
BEh EFh 03h
5, 6, RS-232C Communication / Network command
refer to
(&19).
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
(&above).
RS-232C Communication / Network
6 7 8 9 10
Data
Action Type
H L H L
11 12
Setting
code
H L H
11