Siemens CP 243-2 AS-i module, AS-i slave, AS-i standard slave, Extended AS-i master

Glossary

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 con- ventional sensors and actuators can be connected.

The passive AS-i module; this functions as a distributor and provides a connec- tion 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.

Extended AS-i master

An extended AS-i master supports 31 addresses that can be used for standard AS-i slaves or AS-i slaves with the extended addressing mode. This increases the number of addressable AS-i slaves to a maximum of 62.

The extended AS-i masters of SIMATIC NET support the integrated transfer of AS-Interface analog slaves that operate in compliance with Profile 7.3/7.4 of the AS-Interface Specification.

LAS

List of activated slaves.

LDS

List of detected slaves.

LPS

List of permanent slaves.

Glossary-2	SIMATIC NET CP 243-2 AS-i Master
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