Runco SP-42 - Manual (Page 63)

Runco CinemaWall SP Series Owner’s Operating Manual 53
PRE
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IMINAR
Y
6.1
RS-232 Connection
and Port Configuration To interface the CinemaWall 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 3-13.
Configure the RS-232 controller or PC serial port as follows: no parity, 8 data bits, 1 stop
bit and no flow control. Set its baud rate to 115200, to match that of the CinemaWall
RS-232 port.
6.2
Serial Command
Syntax Serial commands to the CinemaWall take the following form:
• You can send commands in either hexadecimal or ASCII format.
• ASCII commands are not case-sensitive.
• Commands begin with the “Start of Text” (STX) character (02h or <Ctrl> B in ASCII),
followed by the display ID (2 bytes), the command data and command argument
(3 or 6 bytes; refer to Table 6-1) and the “End of Text” (ETX) character (03h or
<Ctrl>
C in ASCII).
• You do not need to send a carriage return after the command.
• The default CinemaWall display ID is 01 (30h 31h). With most commands, you can also
use the “wildcard” display ID of “**” (2Ah 2Ah) in place of any value for the ID. However,
when requesting status via serial commands, you must use a specific display ID; “**”
does not work in these cases.
Example For example, if the CinemaWall ID number is set to its default value (01 = 30h 31h), send
the following sequence to set the contrast to its highest possible level (255):
6. Serial Communications
STX ID (2 bytes) Command (3 bytes) Argument (3 bytes) ETX
Hex 02
30 31
or
2A 2A
43 4E 54 32 35 35 03
ASCII <Ctrl> B
0 1
or
* *
C N T 2 5 5 <Ctrl> C