Connecting a PC
C1 C2 C3 C4 P1 P2 P3 P4
RS-232C port specifications
PC Control of the TV
• When a programme is set, the TV can be controlled from
the PC using the RS-232C terminal. The input signal
(PC/video) can be selected, the volume can be adjusted
and various other adjustments and settings can be made,
enabling automatic programmed playing.
• Use an RS-232C cable cross-type (commercially available)
for the connections.
NOTE
• This operation system should be used by a person who is
accustomed to using PCs.
Communication conditions
Set the RS-232C communications settings on the PC
to match the TV’s communications conditions. The
TV’s communications settings are as follows:
Baud rate:
9,600 bps
Data length:
8 bits
Parity bit:
None
Stop bit:
1 bit
Flow control:
None
Communication procedure
Send the control commands from the PC via the RS-
232C connector.
The TV operates according to the received command
and sends a response message to the PC.
Do not send multiple commands at the same time.
Wait until the PC receives the OK response before
sending the next command.
Make sure to send “A” with the carriage return and
confirm that “ERR” returns before operating.
Command format
Command 4-digits: Command. The text of four
characters.
Parameter 4-digits: Parameter 0 – 9, blank, ?
0
0
5
5
1
0
0
–
3
0
0
0
0
9
0
?
?
?
?
?
O
K
E
R
R
When “?” is input for some commands, the present
setting value responds.
Response code format
After sending the return code (0DH), make sure to send
line feed (0AH) as well.
Normal response
Problem response (communication error or incorrect
command)
Parameter
Input the parameter values, aligning left, and fill with
blank(s) for the remainder. (Be sure that four values are
input for the parameter.)
When the input parameter is not within an adjustable
range, “ERR” returns. (Refer to “Response code
format”.)
Return code (0DH)
Return code (0DH)
35
RS-232C serial control cable
(cross type)
Eight ASCII codes
e
CR
Command 4-digits
Parameter 4-digits Return code
LC-42X20E-gb.indd 35
LC-42X20E-gb.indd 35
2007/09/04 16:31:27
2007/09/04 16:31:27
