CHAPTER 4: CONNECTING TO DEVICES AND NETWORKS
MODEM CONNECTIONS
D400 SUBSTATION GATEWAY USER’S MANUAL
GENERAL
63
Modem connections
A COM2 port is provided on the COM2 Port Adapter or the Redundant TP Et COM2
Port Adapter. The COM2 port can support serial connections for the following dial-up
interfaces:
•
External modem
•
Point-to-point protocol (PPP) services
•
Wide area network
The COM2 port provides a single DB-9 connector wired for an RS-574 DTE signal. The COM2
Port Adapter plugs into any NET slot (slots 11 and 12) of the D400. The Redundant TP
Et COM2 Port Adapter plugs into the NET1 slot (slot 11).
NOTE
The COM2 Port requires an external modem to provide dial-up functionality.
See “COM2 port adapter” on page 48 for more information.
To connect a modem
to the COM2 Port
Adapter
Connect a straight-through modem cable (not supplied with the D400) to the modem and
the D400’s COM2 port. Connect using the settings provided below.
Modem Settings:
•
Baud rate: 38400 bps
•
Data bits: 8
•
Parity: Disabled
•
Stop bit: 1
Figure 39: Modem to COM2 port 2 adapter
BI_D3+
5
5
BI_D4+
BI_D3
−
6
6
BI_D4
−
BI_D4+
7
7
BI_D3+
BI_D4
−
8
8
BI_D3
−
D400
PC
Name
Pin
Pin
Name
1
13
14
25
1
5
6
9
2
3
20
7
22
4
5
6
Modem
