Configuring Safety Integrated (Spl); Introduction - Siemens SINUMERIK 840D sl Configuration Manual

9.7

Configuring Safety Integrated (SPL)

9.7.1

Introduction

With the aid of safe programmable logic (SPL), safety-related sensors and actuators can be
directly connected to the control's I/O and evaluated by means of software without external
evaluation units.
In order to check that the NCK SPL and PLC SPL are functioning, the system program
organizes a cyclic data cross-check between the PLC and the NCK.
Figure 9-10
The Safety Integrated (SPL) mode is supported by all NCU versions available in the TIA
Portal.
The Safety Integrated (SPL) mode has the following characteristics:
● SINAMICS Integrated or connected NX use the SINUMERIK "SI Motion Monitoring"
telegrams, not the PROFIsafe telegrams.
● The user program is programmed like a standard user program in the editors for STL,
FBD or LAD. Each safety-related program must be created in two programming
languages in order to allow the data cross-check (PLC SPL and NCK SPL).
● During the programming, the SGE/SGA of the data block SPL [DB18] is used that you
assign on the NCU (e.g. via SINUMERIK Operate) to the I/O addresses of the field
devices.
See: Function Manual, SINUMERIK Safety Integrated
SINUMERIK STEP 7 Toolbox V14 SP1
Configuration Manual, 05/2017, A5E41846325
SPL - data cross-check
Safety configuration
9.7 Configuring Safety Integrated (SPL)
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