SmartPLC SafeLine with PROFIBUS slave interface
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COM module
42210
The COM module provides the PROFIBUS functionality of AC412S. This comprises the PROFIBUS
connection and the necessary firmware. The COM module receives the fieldbus data from the main
module via an interface and transfers it to the fieldbus. Simultaneously it receives data from the
fieldbus and transfers it to the main module for further processing.
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AS-i module
42242
The AS-i module provides the AS-i functionality of AC412S such as receiving, evaluating and
transmitting AS-i telegrams without any logical preprocessing. It contains 2 AS-i masters controlling 2
separate AS-i circuits.
The following number of AS-i slaves can be connected to each AS-i master:
up to 62 non safe AS-i slaves or
up to 31 safe AS-i input slaves or
up to 15 AS-i control slaves to control safe AS-i output slaves
The AS-i module exchanges the data of the safe AS-i slaves with the safety module via the backplane.
All AS-i data is provided to the main module for representation on the display.
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Safety module
42251
The safety module contains the safety-related hardware of AC412S. The architecture of the safety
module provides the following structural features:
1oo2 hardware architecture (1 out of 2 architecture)
2-channel structure with separate diagnostics in both channels
2-channel safe inputs selectable
1-channel and 2-channel safe outputs selectable
Built-in tests on both safe processing units (safety CPU 1/2)
Hardware failure tolerance (HFT) = 1
The safety module consists of the following components:
Safety CPU PCB with 2 processors for the control technology signal processing (safety CPU1/2)
Safety I/O PCB with a separate voltage supply for the local I/O interface
Both PCBs are separated from each other galvanically. They are supplied from separate voltage
sources.
Both safety CPUs have separate watchdogs and reset circuits. They are interconnected via cross
communication.
Both PCBs are interconnected via a serial interface for bidirectional data exchange.
The safety module has interfaces to the main module and the AS-i module.
