User manual

Chapter Two Installation
Page 9 Dec 2009
2.3 RS-232 Serial Port
The serial port is a 9 pin DB9 female and provides for
connection to a host device as well as a laptop computer
for configuration, field testing and for factory testing.
Communication is via standard RS232 signals. The 605M-
D1 is configured as DCE equipment with the pinouts
detailed below.
DB9 Connector Pinouts
Hardware handshaking using the CTS/RTS lines or using XON/XOFF protocol is provided.
Example cable drawings for connection to a DTE host (a PC) or another DCE hosts (or modem) are detailed above.
When operating In Automatic Connect mode, the DCD signal goes high when the modem has established a
connection to the remote device.
Pin Name Direction Function
1 DCD Out Data carrier detect –
2 RD Out
Transmit Data – Serial Data Output
3 TD In
Receive Data – Serial Data Input
4 DTR In Data Terminal Ready -
5 SG Signal Ground
6 DSR Out
Data Set Ready - always high when unit is powered on.
7 RTS In Request to Send -
8 CTS Out Clear to send -
9 RI Out Ring indicator -
DCE HOST
DB9
MALE
MODEM
DB9
MALE
RD
TD
SG
RTS
CTS
DSR
DTR
DCD
RD
TD
SG
RTS
CTS
DSR
DTR
DCD
2
5
7
8
6
4
1
3
2
5
7
8
6
4
1
3
DCE HOST
MODEM
DB9
MALE
DB9
FEMALE
RD
TD
SG
RTS
CTS
DSR
DTR
DCD
RD
TD
SG
RTS
CTS
DSR
DTR
DCD
2
5
7
8
6
4
1
3
2
5
7
8
6
4
1
3