Sensor systems 2 AS-Interface

AS-Interface - Introduction
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1 Introduction
1.1 What is AS-Interface?
The Actuator-Sensor Interface (AS-Interface) is the replacement for conventional
wiring technology on the sensor-actuator level.
AS-Interface ensures secure, extremely EMC resistant data transmission,
minimises installation time and costs, includes a diagnostic function and detects
short circuits and other conditions, reduces maintenance costs, enables
the simple decentralisation of control processes, increases the transparency
of a system, makes any kind of upgrade particularly simple and
flexible, and guarantees high availability.
AS-Interface is not a proprietary system, but rather an open standard which
is available on the market from many manufacturers in a wide range of versions.
1.2 The decisive advantages of AS-Interface
The Actuator-Sensor-Interface (AS-Interface) is optimised for the reliable
transfer of small volumes of data under harsh industrial conditions and for
economic reasons it has become the tried and tested standard for the networking
of sensors and actuators in many applications.
In conventional wiring two cores per sensor and actuator are typically required
for the power supply and a further core for the signal or control cable.
The power supply, for example, can be laid in parallel via splitter boxes, but
the input and output signals must be looped via distribution devices and laid
to PLC cards. This leads to high costs for the method of connection/distribution,
involves much time on installation and, in addition, the wiring must
be documented in detail.
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group Tel.: Germany +49 621 776-0 USA +1 330 4253555 Singapore +65 67799091 Internet http://www.pepperl-fuchs.com
Issue date 2004-11-19 - Catalogue AS-Interface 2004/2005