Runco CX-57HD Serial Communications, RS-232 Connection and Port Configuration, Serial Commands

6. Serial Communications

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).

6.1

RS-232 Connection and Port Configuration

•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/Ainstead of the four-digit code.

Table 6-1lists the RS-232 command set.

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

6.2

Serial Command Syntax

Runco CX-52HD/CX-57HD Owner’s Operating Manual 51