Hardware Setup, cont’d
SCP 104
3. Connect the MLC 104 IP Plus' digital I/O wires (from |
digital I/O ports 1, 2, and 3) to the IPA T RLY4's inputs |
|
| A +12 VDC |
| |
|
| B Ground ( | ) | |
|
| C IRCM, ACM, RCM, CM | ||
|
| E SCP communication (IR) | ||
+V OUT | GROUND CM IR IN | SCP | Maximum = | |
A B C D E | ||||
2 SCPs | ||||
COMM LINK | ||||
|
|
| Per System | |
DISPLAY | |
ON | OFF |
VOLUME
CONFIG
VCR
DVD
PC
1
2
3
4
SCP 104
(1, 2, and 3), as shown below. The Extron |
(CTL and CTLP) cable is recommended for these |
connections. |
MLC 104 IP Plus |
Right Side Panel |
200' (61 m) max. to Last Device
C IRCM, ACM, RCM, CM
BGround ( 
)
A +12 VDC 
| DVD & VCR CONTROL | Tx | |
Maximum = | DVD | VCR |
|
4 Control | TITLE | MENU |
|
Modules |
|
| TUNER |
ENTER | TV/VCR |
| |
(4 module | PREV/REW PLAY NEXT/FWD | PAUSE STOP | |
addresses) |
|
|
|
RS- |
|
| Tx | ||
|
| Rx | |||
DISPLAY 232/IR | GROUND | ||||
| IR OUT | ||||
| A+12V OUT | ||||
| |||||
BGROUND | |||||
C COMM |
|
| CM | ||
D |
| IR IN | |||
LINK |
| SCP | |||
E |
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
I/O |
|
| 2 | ||
|
| 3 | |||
DIGITAL |
|
|
| ||
|
| GROUND | |||
|
|
|
|
| Rx |
RS- |
| A | Tx | ||
| MLS | ||||
232 |
|
| B |
| |
LAN
PRESS TAB WITH TWEEKER TO REMOVE
+12 VDC
Relay 1
Relay 2
Relay 3
IPA T RLY4 INPUTS
1 2 3 4 C
Extron CTLP Cable Color Code:
ESCP Communication 
= White
C Control Module Communication 
= Violet
B Ground ( |
| ) & Drain Wire |
| = Black & Drain Wire |
|
|
A+12 VDC 
= Red
An MLC 104 IP Plus controller daisy chained to a SCP 104 remote panel
| GROUND |
12V | GROUND |
POWER | |
| +12V IN |
MLC 104 IP Plus Right Side
IPA T RLY4 Front Panel
| N The maximum distance allowed between an MLC |
| controller and a SCP 104 is 200’ (61 m). |
C | Digital I/O — This port is configurable as a digital input or |
| digital output and can be used to connect a variety of devices, |
| such as sensors, switches, LEDs, and relays. |
You can connect the Extron IPA T RLY4 to the MLC to enable a relay function (to raise a projector screen, for example). To use the IPA T RLY4 with the MLC 104 IP Plus, do the following:
1.Use Global Configurator to set the MLC's digital I/O ports to output mode.
NRefer to the MLC 104 IP Plus User's Manual for the steps to set this port to output.
When the MLC's output signal is applied to one of the IPA T RLY4's relays, that relay’s NO (normally open) contacts close and its NC (normally closed) contacts open.
2.Connect the MLC's 12 VDC output to the IPA T RLY4's "C" (common voltage) terminal.
NRefer to the IPA T RLY4 User's Guide for information on how to wire the IPA T RLY4's relay outputs.
As shown in the illustration below, the digital I/O port is set to measure two states: on or off; high or low. Its input threshold voltages are as follows: low is <2.0 V and high is >2.8 V.
+12V+5V
2K
SW2
I/O
24K | SW1 |
GND
An equivalent digital I/O port circuit
MLC 104 IP Plus • Hardware Setup | MLC 104 IP Plus • Hardware Setup |
