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RS-232C Communication
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CONTROL port
of the projector
Connecting the cable
Turn off the projector and the computer.
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Connect the CONTROL port of the projector with a RS-232C port of
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the computer by a RS-232C cable (cross). Use the cable that fulfills the
specification shown in the previous page.
Turn the computer on, and after the computer has started up turn the
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projector on.
Communications setting
9200bps, 8N
1. Protocol
Consist of header (7 bytes) + command data (6 bytes).
2. Header
BE + EF + 03 + 06 + 00 + CRC_low + CRC_high
CRC_low : Lower byte of CRC flag for command data
CRC_high : Upper byte of CRC flag for command data
3. Command data
Command data chart
byte_0
byte_
Action
low
high
Action (byte_0 - )
Action
Classification
SET
2
GET
4
INCREMENT
5
DECREMENT
6
EXECUTE
RS-232C cable (Cross)
- ()
RD (2)
TD (3)
- (4)
GND (5)
- (6)
RTS (7)
CTS (8)
- (9)
byte_2
byte_3
Type
low
high
Change setting to desired value.
Read projector internal setup value.
Increment setup value by .
Decrement setup value by .
Run a command.
RS-232C Communication (continued)
() CD
(2) RD
(3) TD
(4) DTR
(5) GND
(6) DSR
(7) RTS
(8) DTS
(9) RI
byte_4
byte_5
Setting code
low
high
Content
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RS-232C port
of the computer
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