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6 975-0052-01-01 Rev A
Connecting the ICA to a Computer using a Modem
The ICA can be connected directly to a modem for use in
remote sites where a computer may not be available or
desired. Any computer that has an available serial
communications port and terminal emulation software can
communicate with the SW Plus series inverter through a
cable or modem connection.
To use a modem, the following is required:
• a terminal emulation program (see “Setting Up a Modem
Connection” on page 21)
• a modem capable of auto answer, which must be set at a
9600/N81 BAUD connection
• an adapter for the DB9 connection from the phone cable
to serial port adapter.
• A NULL MODEM adapter will be required for most
applications. Contact the modem provider and modem
documentation for more information.
• The program also assumes that the ICA is connected to a
serial port with a COM number of 1. If you are using a
COM port other than 1, refer to “Enter COM Port
Property Values” on page 23.
To connect a modem to an inverter:
1. Install the cables as illustrated in Figure 1-3.
2. Load the ICAP software on the computer. (page 14).
3. Set up your terminal emulation program. (page 21).
4. Configure the ICAP software if necessary. (page 34).
Important:
Some modems automatically adjust to the highest
transmission speed. The ICA communicates at 9600 BAUD only
and the modem must be able to stay at this setting.