Siemens SIMATIC NET DP/AS-i Link 20E Manual page 138

Table of Contents

Advertisement

Glossary
AS-i analog slave
AS-i analog slaves are special AS-i standard slaves that exchange analog values
with the AS-i master.
AS−i library
Library whose functions allow the user program to communicate with the AS−i
driver.
AS-i master
The AS-i master is used to monitor and control the simplest binary actuators and
sensors via AS-i modules or AS-i slaves.
A distinction is made between a "standard AS-i master" and the "extended AS-i
master".
AS-i module
For the AS-Interface, a module concept has been defined that allows the
block-like linking of AS-i slaves − sensors and actuators − via AS-i modules.
The following types of module exist:
The active AS-i module with an integrated AS-i chip; using this, up to four
conventional sensors and actuators can be connected.
The passive AS-i module; this functions as a distributor and provides a
connection for up to four sensors and actuators with an integrated AS-i chip.
In keeping with the concept of the standard AS-i master and the extended AS-i
master, either AS-i chips with standard functions or with extended functions are
used in the AS-i slaves.
AS-i slave
All the nodes that can be addressed by an AS-i master are known as AS-i
slaves.
AS-i slaves are distinguished by their design (AS-i modules and sensors or
actuators with an integrated AS-i attachment) and their address range (AS-i
standard slaves and AS-i A/B slaves with the extended addressing mode).
AS-i standard slave
An AS-i standard slave always occupies one address on the AS-Interface; with
this address organization, up to 31 AS-i standard slaves can be attached to the
AS-Interface.
APF
AS−i−Power Fail. Flag or LED display that indicates that the power supply on the
AS-i cable is too low or has failed (for example failure of the AS-i power supply
unit).
138
DP/AS-Interface Link 20E
Release 08/2008
C79000-G8976-C235−01

Advertisement

Table of Contents
loading

Table of Contents