Legrand RS232 - Manual (Page 2)

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SPECIFICATIONS
UL and cUL Listed
MR232 Input Voltage .....................9-12VDC, 50mA minimum
AC-DC adaptor (provided)
Input ...............................................................120VAC, 60Hz
Output ..............................................................9VDC, 50mA
DESCRIPTION
The MR232 Network Controller provides the communication
interface between a Miro wireless lighting control system
and other RS232 compatible building controls. It acts as a
command and control station using an ASCII communication
protocol. With it, both humans and automation systems can
control virtually any Miro device on the wireless network.
The MR232 provides the ability to offer
interconnectivity with automation system and
building control integration providers.
Top Dog™ Wireless Communication
Miro wireless devices use radio signals to communicate
with each other to control lighting and other types of
electric loads in selected areas. These wireless devices use
the 900MHz band for high-speed control communication.
Using the “frequency-agile” Top Dog™ technology, these
wireless devices avoid interference with other 900MHz
devices, such as cordless phones and baby monitors.
OPERATION
The MR232 interfaces to an automation system
through an industry standard RS232 port.
In a typical installation the interface is bound to a
specific installation or house. This binding provides
direct access of the house presets as well as the 127
rooms and the 4095 possible groups on the network.
To query the wireless system and log the control points
(devices), connect the MR232 to a PC running a generic
terminal emulator such as Windows Hyper-TerminalTM
at 38.4Kbd. From this interface, the user can build an
installation list and use it to create a spreadsheet of all
the possible control points (devices) available on the
network. These control points can then be programmed
into the automation systems and provide a seamless
control environment between the two systems.
Power Fail Memory
After a power failure, all wireless devices
automatically return to the state that they were in
immediately prior to loss of power. All configuration
and scene control information is preserved.
Application Assistance
The MR232 Protocol Guide provides more information
about how to configure command sequences to pass
from a building automation control system through
the MR232 Network Controller and on to the Miro
wireless system. Instructions for installation, binding
operations, and use are included with the relevant
wireless devices. Application support information
and installation guides are available online.
Do not locate the MR232 close to any device that may
cause interference or behind large metal objects that can
block radio reception. Avoid fluorescent light fixtures, TV
sets, computers, refrigerators, microwave ovens, range
hoods, safes, etc.
INSTALLATION
1. Use an RS232 serial cable of the appropriate
length. If the one supplied is not appropriate, see
CONNECTIVITY for DB9 serial cable information.
2. Locate the MR232 within reach of the serial
cable connecting it to the building automation
system (max. 50 feet, unless an RS232 extension
device is used). Ideally, the MR232 should be in
a central location, taking into consideration both
the horizontal and vertical space in the building.
In a 2-story plus basement structure, a good
position may be on the first floor atop a cabinet.
3. Connect the DB9 serial cable to the
MR232 and control terminal.
4. Plug the external power supply into a
convenient 120 volt outlet, and connect the
power cord to the MR232’s power socket.
5. The status LED will light yellow, indicating
that the unit is ready for configuration.
Set House ID
MR232
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