Runco CX-52HD/CX-57HD Owner’s Operating Manual 51
PRE
L
IMINAR
Y
6.1
RS-232 Connection
and Port Configuration
To interface the Crystal Series LCD with a home theater automation/control system or a
PC running terminal emulation software, connect it to your control system or PC as shown
in
Figure 3-10. (Use a straight-through cable.)
Configure the RS-232 controller or PC serial port as follows: no parity, 8 data bits, 1 stop
bit and no flow control. Set the baud rate to match that of the Crystal Series LCD RS-232
port. To check the baud rate setting, select
Baud Rate from the ISF Calibration menu (refer
to page 41).
6.2
Serial Command
Syntax
• Commands are in ASCII format and are not case-sensitive.
• A carriage return is not required after a command.
• When you send a valid command, the Crystal Series LCD executes it and
acknowledges it with a right-bracket character (]) followed by the four-digit numeric
code you sent; for example, ]0002.
• When you send an invalid command (one followed by values outside the valid range for
that command), the Crystal Series LCD ignores it and returns >MAX or <MIN instead of
the four-digit code.
• When you send an unrecognized/misspelled command, the Crystal Series LCD ignores
it and returns -N/A instead of the four-digit code.
Table 6-1 lists the RS-232 command set.
6. Serial Communications
Table 6-1. Serial Commands
Command Description
[ S3A 0###
Set audio volume to ### ( = 000-100)
Example: [S3A0075 sets volume to 75
[ +3A
Audio volume up
[ -3A
Audio volume down
[ S3E 000#
Audio mute (speakers/headphones)
0 = not muted, 1 = muted
Example: [S3E0001 mutes the audio output
[ S4A 000#
Main input selection
0 = TV
1 = Input1
2 = Input2
3 = Input3
4 = Input4
6 = RGB
8 = HDMI1
9 = HDMI2
Example: [S4A0006 selects RGB
