Bidirectional Control And Communication Connections And Features - Extron electronics IP Link Pro xi IPL EXP I/O Series User Manual

Bidirectional Control and Communication Connections and Features

3-pole COM ports, RS-232 only
All models except the IPL EXP RIO8 include COM ports, which can be used for serial
control of a display or other device and to receive status messages from the connected
devices. These ports can send commands from a driver file.
IPL EXP I/O Series serial protocol:
300 to 115200 baud (9600 baud = default)
•
• 8 (default) or 7 data bits
• 1 (default) or 2 stop bits
No parity (default), even parity, or odd parity
•
• Flow control support (default = none),
software-only (XON, XOFF)
Use the following diagram as a wiring guide to cable
the EXP to other devices.
Rear Panels
COM
1
Tx Rx G Tx Rx G
To 3-pole
COM port
NOTE: If you use cable that has a drain wire, tie the drain wire to ground at both ends.
Figure 7.
For bidirectional serial communication, the transmit, ground, and receive pins must be
wired at both the IPL EXP and the other device. Each projector or other device may require
different wiring. For details, see the manual for that equipment or read the Extron device
driver communication sheet, which is included with the drivers.
NOTE: Maximum distances between the EXP and the device being controlled are
generally up to 200 feet (61 m) but can vary based on factors such as cable gauge,
baud rates, environment, and output levels from the EXP and the device being
controlled.
Tx Rx G
COM 1
or
2
COM 2
Tx Rx G
Heat Shrink
Over Shield Wires
Wiring COM Ports for Serial Control
IPL EXP I/O Series • Hardware Features and Installation
(5 mm)
7/8"
(22 mm)
Heat Shrink
Conductor
Transition
Extron
STP 20-2P Cable
Serial (COM) Ports
Select protocol via software.
3-pole COM
COM port default protocol:
(RS-232)
• 9600 baud
• 8 data bits • 1 stop bit
• no parity
NOTE: The 3-pole COM ports support
software ow control only.
Heat Shrink
G Ground
Rx Receive Receive (Rx)
Tx Transmit Transmit (Tx)
Strip wires
3/16" (5 mm) max.
TIP: STP 20-2P
3/16"
cable, shown
Max.
at left, is
recommended
for these
connections.
on Outer
For best
Jacket to
Inner results,
insulate the
common or
drain wires
using heat
shrink.
• no ow control
RS-232-
Controllable
Device
17