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Installation and Operation, cont'd
Rear Panel Connectors and Switches
1
A
B C
2
1
ON
2
The same type and quantity of connectors and DIP switches
shown above can be found on the rear panels of all models of
the control modules.
Communications connectors — Use these connectors to connect
1
control modules together and to connect them to the MLC and
to an optional IR Link infrared repeater. Both connectors
function the same way, so they are interchangeable.
Plug one end of an Extron Comm-Link cable into one of these
3.5 mm, 5-pole captive screw connectors, and plug the other end
into a connector on another control module or an IR Link, or
connect those wires to the direct insertion IR/RCM captive screw
connector of an MLC. Do not install more than one IR Link.
DIP switches — Set these switches to identify the address of
2
each module. Each module must have a unique address. Note
the direction of the arrow on the switch.
ON
ON
Address DIP switches can be 4-position or
2-position, but only 1 and 2 are used.
1 2
1 2 3 4
1, 2 — Control module address identification — See the follow-
ing illustrations for the appropriate settings for each address.
3, 4 — Not used
ON
1 and 2 down (off)
1 2
ON
1 up (on), 2 down (off) = address 1, control module #2
1 2
ON
1 down (off), 2 up (on) = address 2, control module #3
1 2
ON
1 up (on), 2 up (on)
1 2
DIP switch settings
Relay Control Modules • Installation and Operation
2-4
1
D
E
A
B C
D
E
=
address 0, control module #1
= address 3, control module #4
Cabling
For each control module to be connected to an MLC, set the rear
panel DIP switches, then follow these steps:
1.
If it hasn't already been done when the wall box was
installed, cut a length of Extron Comm-Link cable to go
between the MLC and the control module.
2.
Using the following diagram as a guide, attach a 3.5 mm,
5-pole captive screw connector to the end of the cable that
will be plugged into the control module, and connect wires
on the other end of the cable to the MLC's IR/RCM port (a
4-pole direct insertion captive screw connector).
Wire both ends of the cable identically (pin A to pin A, pin
B to pin B, etc.).
connector
A
+12VDC
B
Ground ( )
C
Control signal (RCM/
IRCM)
MLC
IR / RCM
port
A B C D
IR / RCM
MLC 206 to a Relay Control Module
Only three wires are required, but use four wires (A, B, C, D)
if an IR Link infrared repeater will be daisy chained with
the control modules. Refer to the IR Link User's Manual for
details.
Do not install more than one IR Link in a MediaLink
system. Also, do not connect more than four control
modules (RCMs, ACMs, IRCMs) at a time to an MLC.
The MLC contains three relays, so you may install a
maximum of one RCM-SC or one RCM-SCLT in a
system with an MLC.
Relay Control Modules • Installation and Operation
A B C D E
Control
Module
RCM Control
Module(s)
ROOM CONTROL
SCREEN POSITION
LIGHTING
ON / OFF
A
B
C
DISPLAY
POWER
VCR
DVD
Laptop
VOLUME
MAX/
MIN
Extron
MLC 206
MLC 206
MediaLink Controller
2-5
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