6
RS-232C Communication
RS-232C Communication
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
CONTROL port
RS-232C cable (Cross)
RS-232C port
of the projector
of the PC
- (1)
(1) CD
RD (2)
(2) RD
TD (3)
(3) TD
- (4)
(4) DTR
GND (5)
(5) GND
- (6)
(6) DSR
RTS (7)
(7) RTS
CTS (8)
(8) DTS
- (9)
(9) RI
Connecting the cable
1.
Turn off the projector and the PC.
2.
Connect the CONTROL port of the projector with a RS-232C port of the PC
E\D56&FDEOHFURVV8VHWKHFDEOHWKDWIXO¿OOVWKHVSHFL¿FDWLRQVKRZQ
in the previous page.
3.
Turn the PC on, and after the PC has started up turn the projector on.
Communications setting
19200bps, 8N1
1. Protocol
Consist of header (7 bytes) + command data (6 bytes).
2. Header
BE + EF + 03 + 06 + 00 + C CRC_high
&5&BORZ/RZHUE\WHRI&5&ÀDJIRUFRPPDQGGDWD
&5&BKLJK8SSHUE\WHRI&5&ÀDJIRUFRPPDQGGDWD
3. Command data
Command data chart
byte_0
byte_1
byte_2
byte_3
byte_4
byte_5
Action
Type
Setting code
low
high
low
high
low
high
Action (byte_0 - 1)
Action
&ODVVL¿FDWLRQ
Content
1
SET
Change setting to desired value.
2
GET
Read projector internal setup value.
4
INCREMENT
Increment setup value by 1.
5
DECREMENT
Decrement setup value by 1.
6
EXECUTE
Run a command.
