Siemens Sinumerik 840D sl Function Manual page 287

10/15
Direct connection of a maximum of
192 safety--related sensors
(e.g.: Mode switch, light
barriers, Emergency Stop,...)
Figure 7-31 Safe Programmable Logic
Machine
PROFIsafe or
F_SENDDP/
F_RECVDP
Process
Figure 7-32 Integration of SPL into the overall system
© Siemens AG 2015 All Rights Reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
SGE
SGE
External
SGE/SGA
NCK signal processing
Comm.
CDC
Bus
PLC signal processing
Connecting Sensors/Actuators
7.5 Safe programmable logic (SPL)
NCK- -SPL
Crosswise result and
data comparison
PLC- -SPL
Internal
SGE/SGA
Interface
NCK- - NCK- -SGE/
SPL SGA
signals
NCK monitoring channel
SPL- -
CDC
Drive monitoring channel
NC- -/PLC
interface:
PLC- -
Axis/
SPL
spindle DB
Interface
System
SGA
Max. 192 safety--related
actuators can be connected
(e.g.: Protective door
interlocking, motor brakes, ...)
SGA
Comparator
Data
Axis
CDC
Comparator
Data
7-287