Runco CX-OPAL55, CX-OPAL47, CX-OPAL42, CX-65HD, CX-55HD Serial Communications, 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 (such as HyperTerminal, provided with Microsoft® Windows™), connect it to your control system or PC as shown in Figure 3-9.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 Setup menu (refer to page 41).

•Commands are in ASCII format and are not case-sensitive.

•A carriage return is not required after a command.

•To send a command from a PC running terminal emulation software, create a text file containing that command. Then, use the file transfer function in your terminal emulation program to send the command. (If you are using HyperTerminal, choose “Send Text File...” from the Transfer menu.)

•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
				0 = not muted, 1 = muted
Example: [S3E0001 mutes the audio output

6.1

RS-232 Connection and Port Configuration

6.2

Serial Command Syntax

Crystal Series LCD Installation/Operation Manual 51