Installation User guide
Installation, cont’d
MLC 226 IP Series • Installation
2-8
PRELIMINARY
N
  Requirements for setting addresses for IRCM/RCM/ACM/CM control modules 
differ depending on how they are connected. If a control module is connected 
to the 3-pole connector on an SCP, it can be addressed differently than it would 
if connected to the SCP’s 5-pole connector. Refer to the appropriate control 
module user’s manual and the SCP 104/226 User’s Manual for instructions 
on addressing the control modules.
SCP 226
3 Pole
Connector
SCP 226
C
B
A
3 Pole Connector
C
B
A
C
A
B
C
A
B
C
A
B
Extron CTLP Cable Color Code:
CM-20BB
Control Module
Address 1
CM-20BB
Control Module
Address 1
CM-20BB
Control Module
Address 1
ACM-Tone
Control Module
Address 2
ACM-Tone
Control Module
Address 2
ACM-Tone
Control Module
Address 2
E
B
A
E
B
A
E
B
A
SCP Communication
+12 VDC
Ground ( ) & Drain Wire
Ground ( ) & Drain Wire
E
D
C
B
A
SCP Communication
Modulated IR (for IR Link)
Control Module Communication
+12 VDC
= White
= Black and Drain Wire
= Violet
= Red
NOTE:
2 SCPs 
Maximum 
Per System
MLC 226 IP
Bottom Panel
200' (61 m) Max.
to Last Device
C
IRCM, ACM, RCM
VOLUME
SCP 226
IR
DISPLAY
Extron
1
2
3
4
5
6
ON
OFF
PIC
MUTE
AUTO
IMAGE
VCR
DOC
CAM
PC
LAPTOP
DVD
VOLUME
SCP 226
IR
DISPLAY
Extron
1
2
3
4
5
6
ON
OFF
PIC
MUTE
AUTO
IMAGE
VCR
DOC
CAM
PC
LAPTOP
DVD
CM/IR/SCP
A B C D E
+12V OUT
GROUND
CONT MOD
IR IN
SCP COM
TONE CONTROL
BASS TREBLE
MAX/
MIN
TONE CONTROL
BASS TREBLE
MAX/
MIN
TONE CONTROL
BASS TREBLE
MAX/
MIN
Connections to SCP 226 control panels and control modules without an 
IR signal repeater
N
  The control module(s) connected via an SCP’s 3-pole connector must be the 
same models set to the same DIP switch addresses as the control modules 
connected directly to the MLC. For example, if an IRCM-VCR and a CM-5BB 
are connected to the MLC’s port, each SCP should have an IRCM-VCR and a 
CM-5BB (and not other models) connected to its 3-pole connector.










