User`s guide

Overview

The SLTA-10 Adapter network interface may be attached to the host processor using

modems and the switched telephone network. Figure 11.1 illustrates this option.

Host

‘w

Modem 1

Telephone

Network

Modem

via null

modem

EIA-232

Interface

Network

Interface

transceiver

LONWORKS

Network

Figure 11 .l

Using the SLTA-10 Adapter with Modems

When the SLTA-10 Adapter is configured for modem support, it will respond to

special network management messages that cause it to communicate with the

attached modem. The modem used must support the Hayes standard AT command

set allowing it to dial-out, auto-answer incoming calls, and set various parameters.

Once a connection is established, the host computer communicates transparently

with the network as though the SLTA-10 Adapter were attached locally.

In NSI mode, the SLTA-10 Adapter can be configured to initiate the connection with

the host PC when LNS network management messages and/or network variable

11-2

Using the SLTA-10 Adapter with a Modem