Matrix Switch Communication Protocol
The RS-232/RS-485 communications are half-duplex with variable byte
count packets. For RS-232, the matrix switch operates as a DCE device
and therefore can be connected using a straight cable to a DTE device
such as a computer. The RS-232 connector is a DB-9 female. For RS-485, a
discrete wiring connector is provided for custom connection to any
RS-485 equipment. For full details on connecting to the matrix switch refer
to the User Manual.
Default Communication Settings – 9600, N, 8, 1
DIP SWITCH DESCRIPTION
SW1-SW5: Machine ID (address)
0=ON, 1=OFF
SW6-SW7: RS-485 TX/RX Terminating Resistor
0=ON, 1=OFF
SW8: RS-232/RS-485 Master or RS-485 Slave
0=ON, 1=OFF
APPENDIX
SW808HD Rear Panel
Matrix and Peripherals Connection
Matrix System Connections
Control Computer
Projector
TV/HDTV
Receiver
CD/DVD Player
PC
CD/DVD Player
Baud Rate
9600
Parity
None
Data Bits
8
Stop Bits
1
SW1 SW2 SW3 SW4
SW5
Notes
0
0
0
0
0
Address for RS-232/RS-485 Master only
0
~
1
0
~
1
0
~
1
0
~
1
1
~
1
Addresses for Slave devices
s
e
t
o
N
7
W
S
6
W
S
0
0
Resistor ON
1
1
Resistor OFF
1
0
Invalid
0
1
Invalid
s
e
t
o
N
8
W
S
0
RS-485 Slave Device
1
RS-232/RS-485 Master