146 Appendix
WAGO-I/O-SYSTEM 750
753-668/000-004 4FAI 0/4-20 mA Diff PROFIsafe
Manual
Version 1.0.0, valid from HW/SW Version 01/01
12
Appendix
12.1
PROFIsafe
PROFIsafe is a protocol for safe communication, and is certified in accordance
with IEC 61784-3-3.
For the WAGO-I/O-SYSTEM 750, I/O modules were developed with safety-
related inputs and outputs (F I/O modules) without any drastic changes to the
existing series 750 system, making mixed operation of safety-related and non-
safety-related I/O modules possible.
Figure 51: Mixed Operation of Safety-Related and Non-Safety-Related I/O Modules
A safe PLC (PROFIsafe and PROFIBUS or PROFINET master) is used with
PROFIBUS or PROFINET interface as the controller.