Medialink MLC 62 IR D, User Manual, Page: 34 / 70

Wiring the Host/Config Port
The Host/Config port provides an alternative connection by which the MLC can be
configured and controlled from a host device or computer. (The primary means of
configuring the MLC is through the USB port, see
Configuring the MLC via the USB
Port on page 30.) In addition, SIS commands can be issued through this port from the
computer to control the MLC (see SIS Control , beginning on page 56).
The RS-232 protocol for this connection is 9600 baud, 1 stop bit, no parity, 8 data bits,
no flow control. Use a female 9-pin to bare wire RS-232 cable or a universal control cable
(such as UC50', Extron part number 26-518-01, or UC100', part number 26-518-02) to
connect a Windows-based PC or an RS-232 control system to the MLC via this 3-pole,
3.5 mm captive screw connector as follows:
1. Wire the RS-232 cable to one of the 3-pole captive screw plugs provided with the
MLC, as follows:
•
Receive wire to pin 1, which plugs into the Tx (transmit) port
•
Transmit wire to pin 2, which plugs into the Rx (receive) port
•
Ground wire to pin 3, which plugs into the
_
(ground) port
Rx
Tx
GROUND
Tx/IR
COMMON
1
1
2
HOST/ CONFIG
RS-232
IR/
S
DIGITA
L
INPUT
Tx
PW
R
12
V
0.2 A MA
X
RELAYS
N/
O
GROUND
GROUND
GROUND
GROUND
+12 VDC
MLC 62 RS D Rear Panel
To RS-232 Port on Computer
or Control System
9 pin HD
Connector
Ground
Rx Receive
Transmit
Tx
3 Transmit (Tx)
Receive (Rx)
2
Ground ( )
5
1
2
3
Pin:
5
1
9 6
Figure 25. Connecting a Host Computer or Control System to the
Host/Config Port
2. Plug the 3-pole connector into the Host/Config port on the MLC rear panel.
MLC 60 Series MediaLink Controllers • Features, Installation, and Operation 28