Runco CP-42HD - Manual (Page 47)

Runco CP-42HD/CP-52HD Owner ’s Operating Manual 33
6. Serial Communications
To Interface the Climate Portfolio Series LCD with a home theater
automation/control system or a PC running terminal emulation software (such as
TeraTerm Open Source project at http://ttssh2.sourceforge.jp/), connect it to your
control system or PC as shown in Figure 3-6.
Use a straight-through cable.
Configure the RS-232 controller or PC serial port as follows: no parity, 8 data
bits, 1 stop but and no flow control. Set the baud rate to 38400
Commands are in four-byte raw HEX format in the form of Command + Data
1 + ID + Data 2. The Command byte is always 0x69, Data byte 1 defines
which command is to be executed, ID byte is always 0x00; Data byte 2 is
always 0x00, except in the case of the discrete volume command, in which
case it is a value between 0x00 and 0x64.
To send a command from a PC running terminal emulation software, create
either a separate script file for each command or a single script file
containing all the commands along with logic to determine which command is
to be sent. You cannot type commands in by hand because the Climate
Portfolio Series LCD expects the bytes to be sent faster than a human can
type, and also many of the HEX values for Data byte 1 are outside the range
one can enter using the keys on a keyboard.
When you send a valid command, the Climate Portfolio Series LCD executes
it and acknowledges it with
“ OK ” (0x4F followed by 0x4B). Depending upon
the command, it may also return additional strings having to do with
execution of that command.
When you send an invalid or unrecognized command the Climate Portfolio
Series LCD ignores it and returns
“ NG ” (0x4E followed by 0x47).
Table 6-1 lists the RS-232 command set.
Table 6-1. Serial Commands
COMMAND DATA 1 ID DATA 2
0X69 0X90 : SOURCE 0x00 0X00
0X91 : SLEEP 0x00 0X00
0X92 : 1 0x00 0X00
0X93 : 4 0x00 0X00
0X94 : 7 0x00 0X00
0X95 : 0 0x00 0X00
0X96 : ENTER 0x00 0X00
6.1
RS-232 Connection
and Port
Configuration
6.2
Serial Command
Syntax