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CHAPTER 4: CONNECTING TO DEVICES AND NETWORKS
Modem connections
To connect a modem
to the COM2 Port
Adapter
D400 SUBSTATION GATEWAY USER'S MANUAL
D400
Name
Pin
BI_D3+
5
BI_D3−
6
BI_D4+
7
BI_D4−
8
A COM2 port is provided on the COM2 Port Adapter or the Redundant TP Ethernet + 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
Ethernet + COM2 Port Adapter plugs into the NET1 slot (slot 11).
The COM2 Port requires an external modem to provide dial-up functionality.
See "COM2 port adapter" on page 48 for more information.
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
6
1
9
5
PC
Pin
5
6
7
8
1
2
3
4
5
6
7
13
GENERAL
MODEM CONNECTIONS
Name
BI_D4+
BI_D4−
BI_D3+
BI_D3−
14
Modem
20
22
25
63
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