Configuring And Parameterizing The Profisafe I/O - Siemens SINUMERIK 840D sl Function Manual

The PROFIsafe layer creates a PROFIsafe telegram (F-telegram) in each PROFIsafe cycle
with the ANDed SPL output data as F-net data
F-net data = (OUTSEP AND $A_OUTSE)
and the backup data (CRC and the consecutive number) and transfers it to the communication
layer via the bus interface.
In each communication cycle independent of the PROFIsafe cycle, the PROFIBUS layer
transfers a telegram with a PROFIsafe telegram generated from the F-layer as user data to
the slave devices.
Bit pattern
It is not guaranteed that simultaneous changes to individual bits in the SPL (NCK and PLC
OUTSE), which are interpreted as a contiguous associated bit pattern, are transferred
together. It is possible that the receiver briefly receives an inconsistent bit pattern.
Configuring/parameterizing
The configuration and parameterization needed to connect the F-modules to the external NCK/
PLC-SPL interfaces entails the following steps:
1. Generating the configuration using SIMATIC STEP7.
2. Performing a standard SINUMERIK 840D sl commissioning (minimum requirement).
3. Loading the configuration and the PLC basic and user program modules into the
SINUMERIK 840D sl PLC.
4. Parameterizing the PROFIsafe-relevant SINUMERIK 840D sl machine data. See Chapter
"Parameterizing the F-master (NCK) (Page 193)".
8.2.3

Configuring and parameterizing the PROFIsafe I/O

The configuration of the PROFIBUS/PROFINET I/O connections on the PLC side of a
SINUMERIK 840D sl is defined using the Step7 component HW Config. There are two options:
● Integrating Siemens failsafe devices via the hardware catalog
● Integrating third-party failsafe devices by importing the corresponding generic station
description files.
This configuration is loaded into the PLC, the PLC evaluates this data and makes the
information required for PROFIsafe communication with an F-device, available to the NCK and
PLC-side Safety system SW for further evaluation of the F-device configuration.
In addition, the NCK machine data for PROFIsafe parameterization is transferred from the
NCK to PLC. Both components evaluate this machine data and compare the F-devices, which
are parameterized in this data, with the F-device configuration provided from the PLC.
The information on configuring and parameterizing the PROFIsafe I/O provided in this chapter
essentially refers to the specific requirements of SIMATIC. Complete information on
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
WARNING
Connecting sensors and actuators
8.2 Connecting I/O via PROFIsafe
187