RS-232 SERIAL INTERFACE
RS-232 SERIAL INTERFACE CONNECT a PC or CONTROL SYSTEM. VERSION COMPATIBLE V1.0 & V1.5
For a complete list of commands, please reference external document extended RS-232 Protocol Instruction Manual.
RS-232 Confi guration
RS-232 cable is a straight thru cable and not null-modem
De
fi
nition
Pin
Pin
De
fi
nition
1
1
DCD
TX
2
2
RX
RX
3
3
TX
4
4
DTR
GND
5
5
GND
6
6
DSR
7
7
RTS
8
8
CTS
9
9
RI
RS-232
RS-232 SERIAL INTERFACE PROTOCOL COMMANDS ( Ethernet / RS-232 Control driver V2.0 )
The HD-44L switcher can be controlled via the RS-232 serial control port to allow for interfacing to a PC, or similar third party control
system.
The serial communication parameters are 9600 baud, 8 bit, No Parity and 1 stop bit - this is often referred to as 9600 8N1. When the unit
recognizes a complete command it will perform the requested action - there is no delimiter character required.
16
HD-44L
Device
PC
