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VPL-VW85
3. RS-232C
3-1. Connection
Communication is enabled by the use of a D-Sub 9 Pin cross (reverse) cable.
The pin assignment of D-Sub 9 Pin and D-Sub 25 Pin is as follows.
Pin numbers indicated as D-Sub 25 Pin are not used.
Assured cable length: 15 m (However, assurance may not be applicable for some cables.)
The software for controlling the projector from a PC is intended for performing transmission and recep-
tion for only the TxD and RxD lines.
Therefore the handshake normally performed by RS-232C is not necessary.
3-2. Communication Specifications
. Full duplex communication channels (Flow control not performed.)
. Start-stop synchronism system
. Baud rate: 38.4 kbps (bits per second)
. The bit configuration is defined as follows.
1 START Bit + 8 DATA Bits + 1 PARITY Bit + 1 STOP Bit
EVEN Parity ...... Total number of “1”s from D0 to D7 is an even number. 8 0
...... Total number of “1”s from D0 to D7 is an odd number. 8 1
D-Sub 9 Pin
Shell = FG
3
2
7
8
6
5
1
4
9
D-Sub 25 Pin
1
2
3
4
5
6
7
8
20
22
Name
FG
TxD
RxD
RTS
CTS
DSR
SG
DCD
DTR
RI
Grounding for safety protection or cable shield
Transmission data
Reception data
Transmission request
Transmission permission
Data set ready
GND for signal
Data channel signal carrier detection
Data terminal ready
Calling display (Presence/absence of calling signal)
D4 D5 D6 D7
(MSB)(LSB) (EVEN) BIT
PARITY STOP
BIT
START D3D2D1D0