System Structure And Basic Features - Siemens SINUMERIK 840D sl Function Manual

03.06
2.2 SI system structure and basic features
A two-channel, diverse system structure is formed on the basis of an existing multi-
processor structure.
Input /
sensor
Fig. 2-2
Protective
door
sensor
Measuring
value system
Fig. 2-3
© Siemens AG, 2006. All rights reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
Evaluation/
logic
Total system and sub systems
SPL CDC
Axis CDC
Drive
CDC
Motor Module
control
Safety-relevant monitoring functions
Evaluation/logic with monitoring functions and examples of sensors and actua-
tors
2.2 SI system structure and basic features
PLC
Crosswise data
comparison
NCK
Crosswise data
comparison
Drive
control
Crosswise data
comparison
Brief Description
Output /
actuator
Protective
door
interlocking
Shutdown
paths
Motor
2-35