System Structure - Siemens SINUMERIK 840D sl Function Manual

Safety integrated

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Table of Contents

Connecting sensors and actuators

8.2 Connecting I/O via PROFIsafe

System structure

Just like Safety Integrated, the PROFIsafe system structure also has a 2-channel diverse

system design based on the PLC and NCK-PROFIsafe layer.

PROFIsafe communication

The principle of PROFIsafe communications between SINUMERIK 840D and the F-modules

is explained in detail below. This is based on the transfer of the SPL output data $A_OUTSE/

$A_OUTSEP to the F-DO modules:

System structure of the SI I/O using F-modules connected to PROFIBUS DP

Function Manual, 12/2017, 6FC5397-4BP40-6BA1

Safety Integrated