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EZ570
/
EZ570L
LCD Projectors
As of April 2012
SFL12M004
1 3 / 1 7
Serial connector
The serial connector complies with RS-232C. To control the projector from a personal computer, com-
mands must be input through communication software, based on the format and satisfying the commu-
nication conditions shown below.
Basic format
Transmission from the computer begins with STX, then the ID, command, parameter, and ETX are sent
in this order. Add parameters according to the details of control.
Communication conditions (factory setting)
Pin assignments and signal names
6
1
5
9
D-sub 9-pin (female) Serial input
Description
NC
Transmitted data
Received data
Connected internally
Ground
Signal name
–
TXD
RXD
–
GND
No.
1
2
3
4
5
Description
NC
Connected internally
Connected internally
NC
Signal name
–
CTS
RTS
–
No.
6
7
8
9
CAUTION
• It may not be possible to send or receive commands for about 10 to 60 seconds when the lamp is first turned on. If this occurs, wait for 60 sec-
onds, then try sending or receiving again.
• When sending multiple commands, be sure to wait for at least 0.5 second after receiving a response from the projector before sending the next
command.
• Additional time is sometimes required for response due to processing inside the projector. Set the time-out period for command response to 10
seconds or more.
• When using two or more units, set different IDs for each unit.
Start
(1 byte)
End
(1 byte)
Colon
(1 byte)
Semicolon
(1 byte)
(2 byte)
ID designator
01 to 64: Address number
0A to 0Z: Group ID
ZZ: All units (ID ALL)
ID: 2 characters
(2 bytes)
Parameters
(undefined length)
Command
(3 bytes)
(Control and/or query commands)
STX
ETX
C1
P1 P2 ... Pn
C2
A
D
I1 I2
C3
:
;
Signal level
Synchronization method
Baud rate
Parity
Character length
Stop bit
X parameter
S parameter
RS-232C-compliant
Start-stop synchronization
19,200 bps
None
8 bits
1 bit
None
None
