14
RS-232 CONTROL
The MSP11 has an RS-232 Serial Port, which allows it to be controlled by a computer (see Rear Panel Features on pg. 3). In addition to
the PC Control Software, the MSP11 offers two other methods of computer control.
Control Button Emulation: This method allows the computer to imitate the operation of an infrared transmitter or wall-mount control
panel. Although the MSP11 does not accept infrared or wall-mount remote controls itself, it can still receive ASCII characters (via RS-232)
which emulate the buttons on these types of remote controls. From the factory, remote control buttons have equivalent ASCII characters
permanently assigned to them (see table below). Therefore, actions can be assigned to remote control buttons in the same way they are
assigned to Logic Inputs. Then, using this method, the computer can output ASCII characters which are equivalent to the commands
generated by those standard remote control buttons. Control Button Emulation allows the computer to utilize up to forty button definitions
(unlike standard remote controls, which have only twenty-eight buttons). When using up
to four devices in a system, Control Button
Emulation also allows the computer to designate which device or devices should react to each control button command.
Advanced Computer Control: This method provides advanced commands, which allow the computer to retrieve or edit various MSP11
settings. The computer may also emulate control buttons. Using this method, the computer may designate up
to sixty-four devices, and
may also provide ‘real-time’ display of various settings.
This manual only describes the Control Button Emulation method of computer control. For complete details about using the MSP11 with a
computer, including Advanced Computer Control, contact Biamp Systems for the manual "Computer
Control of the MSP11".
Each control button on an infrared transmitter or wall-mount control panel corresponds to one character in the standard ASCII character
set. The character equivalents are summarized in the following table. This table includes all forty possible buttons, their button numbers,
their ASCII code equivalents, and their factory default button definitions (no operation assigned).
button 01 B no operation assigned button 15 P no operation assigned button 29 ^ no operation assigned
button 02 C no operation assigned button 16 Q no operation assigned button 30 _ no operation assigned
button 03 D no operation assigned button 17 R no operation assigned button 31 ' no operation assigned
button 04 E no operation assigned button 18 S no operation assigned button 32 b no operation assigned
button 05 F no operation assigned button 19 T no operation assigned button 33 c no operation assigned
button 06 G no operation assigned button 20 U no operation assigned button 34 d no operation assigned
button 07 H no operation assigned button 21 V no operation assigned button 35 e no operation assigned
button 08 I no operation assigned button 22 W no operation assigned button 36 f no operation assigned
button 09 J no operation assigned button 23 X no operation assigned button 37 g no operation assigned
button 10 K no operation assigned button 24 Y no operation assigned button 38 h no operation assigned
button 11 L no operation assigned button 25 Z no operation assigned button 39 i no operation assigned
button 12 M no operation assigned button 26 [ no operation assigned button 40 j no operation assigned
button 13 N no operation assigned button 27 \ no operation assigned
button 14 O no operation assigned button 28 ] no operation assigned
The computer can initiate any functions or actions that a standard control can, by simply transmitting the equivalent control button ASCII
character. When interfacing the MSP11 to a computer, the computer must be aware that the MSP11 will ‘echo’ all characters it receives
(both from computer and Logic Inputs) via the Serial Port Transmit Data (TXD) output signal. However, from the factory, the MSP11 Logic
inputs are programmed with no ‘echo character’ assigned to them.
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