ISDN is now seen as a real and affordable option for industrial telemetry
applications, with call charges now equivalent to those for analogue
lines. The format offers data rates up to 64kbit/s and instant
connection. Addressing this new potential for industrial communications,
Westermo has introduced what it believes is the first of its kind - a DIN
rail mounting ISDN modem, fully protected against harsh industrial
environments.
The ID-90 incorporates both RS232 and RS 485 interfaces, with two- or
four-wire connections, plus 20 character SMS messaging facility. The unit
can be remotely programmed using AT commands, easing the task of data
acquisition from remote sites. It has four alarm inputs that can be used
to trigger 20 character SMS paging messages or establish automatic data
connections.