Understanding the
Connecting a PC to the Digital Communications System
Connecting a PC to the DXP Plus
Connect the serial data port of the PC to the maintenance port of the DXP
Plus
central processor (CPU)
board. The maintenance port is a dedicated serial data port reserved exclusively for system programming.
The default data format of these serial data ports are shown in the following chart.
Port Type
Baud
Data
stop
Rate
Bits
Bits
Parity
Maintenance Port
9600
a
1
N o n e
Modem Port
2400
a
1
N o n e
You can connect the PC remotely through a telephone line to the DXP
Plus
using customer-supplied
modems at both the PC and the DXP
Plus
common equipment. The DXP
Plus
includes its own modem that
you can connect between the CPU board’s modem
port
and an outside telephone line.
NOTES:
\
Serial Modem Port
Maximum distance between
each
two dedicated
serial data ports and its
external data equipment
is 25 feet.
2
3
5
6
2. Some data devices require
Maintenance Port
CTS signal for proper
operation. Route to device
as needed.
I
5
6
(Front View of Jacks)
Modular Jacks
Pin 1 = Request To Send
Pin 2 = Clear To Send
Pin 3 = Receive Data
Pin 4 = Transmit Data
Pin 5 = Signal Ground
Pin 6 =
Ground
4 Connecting a PC to the Digital Communications System