Digital Projection
M-Vision LED+IR series
INTRODUCTION
Remote Communications Guide
Page Rem_2
Rev D July 2014
Introduction
The projector can be controlled by using an external control system or a computer via a LAN or an RS232 serial interface, using a terminal-
emulation program, such as HyperTerminal.
Projectors can be connected in a daisy chain, connecting the
RS232 OUT
of one projector to the
RS232 IN
of the next. Each projector can be
given a unique
System ID
, and they can be controlled individually or simultaneously via a single computer.
Command format
There are 2 types of command,
Key commands
and
Operation commands
. The individual commands are described later in this guide. All
commands consist of ascii text strings ending with an ascii carriage return character. If a number of projectors are connected in a daisy chain,
then each command should be preceded by a prefix code. For a single projector, a prefix code should NOT be used.
•
Key commands:
<prefix code> ky <keyname> [CR]
•
Operation commands: <prefix code> op <operation> <command> [CR]
Prefix code
The prefix code, if used, comprises the first four bytes of the command, and is made up of the following bytes (in hex):
byte 0
DE (an unprintable character)
byte 1
C0 (an unprintable character)
byte 2
ID1 (ASCI character representing the first half of the projector’s
System ID
in hex)
byte 3
ID2 (ASCI character representing the second half of the projector’s
System ID
in hex)
Examples
System ID
10 (0A in hex)
Prefix code
DE C0 30 41
System ID
28 (1C in hex)
Prefix code
DE C0 31 43
Using the System ID
**
will send the command to ALL projectors.
System ID
**
Prefix code
DE C0 2A 2A
Notes
Details of how to connect to
the projector, using the LAN or
RS232 input, can be found in the
Connections Guide
.
The prefix code should NOT be
used unless a number of projectors
are connected in a daisy chain.
To set the System ID:
- connect one projector at a time and
set each to a different number using
the
op sysid
command.
The System ID
**
will work ONLY
on projectors that are running.
Therefore:
use the
pow.on
command with
no prefix code to turn on
ALL
the
projectors.
then use the
pow.off
command with
the appropriate prefix code to turn
off all or individual projectors.