Siemens SIMATIC ET 200SP Manual page 103

ASIsafe®
The AS-Interface Safety at Work concept allows the integration of safety-related components
in an AS-Interface network, e.g.:
● EMERGENCY STOP switch
● Protective door switch
● Safety light grid
These safety-related components are fully compatible, according to EN 50 295, with the well-
known AS-Interface components, e.g., master, slaves, power supply unit, etc. They can be
operated together on the yellow AS-Interface cable. Siemens supplies all components for
configuring a safe AS-Interface network.
CM
Communication Module
Module for communication tasks that is used in an automation system as an interface
expansion for the CPU.
CPU
Central Processing Unit
CRC
Cyclic Redundancy Check is a test procedure for checking the integrity of data. A generator
polynomial is used to calculate a checksum over the data to be monitored. This checksum is,
in the signature sense, characteristic of the data concerned. The generator polynomial can
be calculated according to various algorithms.
DIAG
Diagnosis
Distributed Safety
Siemens-specific addition to PROFIsafe. The Distributed Safety fail-safe system with F-
Configuration Pack supports implementation of safety concepts for machine and personal
protection.
With Distributed Safety, passivation of selective channels has possible since
PROFIsafe V2.0. The quality bits transferred in the process image are used to enter a
substitute value in the process image for the channel concerned. The quality bits for the
inputs and outputs are subsequently transferred in the process image to the actual process
data. The same mechanism that PROFIsafe uses for reintegration of the module is used for
reintegration of passivated channels.
Fail-safe Module F‑CM AS‑i Safety ST (3RK7136‑6SC00‑0BC1)
Manual, 03/2017, A5E03957059020A/RS-AB/002
Glossary
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