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Moxa TCC-100/100I User's Guide
Overview
Introduction
Many important devices used in today's industrial environment are still designed
for use with an RS-232 interface. The reason is due in part to tradition, and in part
to convenience. RS-232 hardware is relatively easy to design, and the device can
be readily connected to most PCs. The drawback is that RS-232 is a point-to-point
interface, and it imposes a distance limitation of only 15 meters between the
device and the computer.
To overcome these limitations, many users employ RS-232 to RS-422/485
converters, allowing RS-232 devices to connect to an industrial RS-422 or
RS-485 network and transmit data over distances up to 1.2 km. The RS-422/485
standards overcome the distance limitation by using a differential signal for
transmitting data and control signals. Transmission distance and multi-drop
connections are not the only issues of importance for industrial applications In
addition, housing, wiring, power supply, and over-surge protection are also
serious concerns.
TCC-100I provides isolation protection for users who need an industrial grade
interface conversion product to extend RS-232 transmission distance and increase
networking capability. Its superior industrial application design, which includes
DIN-Rail mounting, terminal block wiring, external terminal block power, and
optical isolation for system protection, makes TCC-100I suitable for use in
critical industrial environments. Simply put, your RS-232 devices can be used as
part of an industrial RS-422/485 network, but without any hardware or software
changes.
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