Transmission Technology - Siemens ISI EN 50295 Brochure

AS-Interface
Introduction

Transmission technology

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Overview
Transmission method
A significant feature of the AS-Interface technology is the use of
a common, two-wire cable for data transmission and distribution
of auxiliary power to sensors/actuators.
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Benefits
Cabinets that were previously overflowing with complicated con-
trol line wiring and marshalling distributors can now be replaced
by AS-Interface.
The AS-Interface cable can be connected at any point, thanks to
specially developed wiring and connection using the insulation
displacement method.
This concept gives you tremendous flexibility and considerably
cuts costs.
6/2 Siemens IK PI · 2004
An AS-Interface power supply unit, which meets the require-
ments of the AS-Interface transmission technology, is used for
this system. The AS-Interface shaped cable provides mechani-
cal coding and thus prevents polarity reversal; penetration
terminals are used for simple contacting.
The AS-Interface is a single master system. Communications
processors (CPs) are available for SIMATIC
control process or field communication as masters.
The system expansion now allows double the quantity of slaves
(max. 62) to be operated on AS-Interface. The analog values are
now also preprocessed in the master. For direct connection of
AS-Interface to PROFIBUS DP, DP/AS-Interface Link 20E is
available. Using this DP/AS-Interface link, the AS-Interface can
be used as a subnet for PROFIBUS DP.
The AS-Interface is an open standard. Leading manufacturers
of actuators and sensors support AS-Interface worldwide.
Interested companies can obtain the electrical and mechanical
specifications from the AS-Interface Association on request.
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systems which