Connecting I/O Via Profisafe; Function Description - Siemens Sinumerik 840D sl Function Manual

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Connecting Sensors/Actuators

7.2 Connecting I/O via PROFIsafe

Connecting I/O via PROFIsafe

The fail--safe master (F master) integrated in SINUMERIK 840Dsl in conjunction

with fail--safe I/O modules (F--modules), permits fail--safe communication as spe-

cified according to the PROFIsafe profile both on PROFIBUS DP as well as on

PROFINET IO (PROFIsafe communication).

This means that the safety--related input/output signals of the process (machine)

are coupled to the Safety Integrated function "safe programmable logic" (SPL) in

the same way for both the PLC and NCK--SPL via the particular I/O bus. Fail--safe

I/O devices can be connected via all I/O connections.

SINUMERIK 840D sl

Figure 7-9 SI I/Os using fail--safe modules connected to PROFIBUS DP

PROFIsafe is a communication profile for fail--safe data transfer between fail--safe

components based on the field buses PROFIBUS and PROFINET. This represents

an extension to the standard communication. This allows both standard compo-

nents and fail--safe components to be simultaneously operated on a PROFIBUS/

PROFINET system.

The PROFIsafe profile is characterized by the fact that communication between

the safe terminal nodes, i.e. the F--CPUs, the distributed slaves and the actuators/

sensors/field devices, uses standard PROFIBUS functions.

SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition

PROFINET- -IO

DP slave ET 200S

Machine control panel

DP slave ET 200S

PN device ET 200S

Sinamics s120