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CP-S370W
13. RS-232C communication
(1) Turn off the projector and computer power supplies and connect with the RS-232C cable.
(2) Turn on the computer power supply and, after the computer has started up, turn on the projector power supply.
D-sub 15-pin shrink jack
Communications setting
19200bps, 8N1
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
Action
1
2
4
5
6
68
Projector
Control jack
5
4
3
2
1
SELO
10
9
8
7
6
13
12
15
14
11
GND
Command data chart
byte_0
byte_1
Action
low
high
Classification
SET
GET
INCREMENT
DECREMENT
EXECUTE
RS-232C jack
Computer
D-sub 9-pin
1
1
CD
2
2
RD
3
3
TD
1
4
4
DTR
5
5
GND
6
6
DSR
7
7
RTS
RTS
8
8
DTS
9
9
RI
10
11
12
RD
13
TD
14
15
byte_2
byte_3
byte_4
Type
Setting code
low
high
low
Action (byte_0 - 1)
Change setting to desired value.
Read projector internal setup value.
Increment setup value by 1.
Decrement setup value by 1.
Run a command.
2
3
4
5
6
7
8
9
byte_5
high
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