Thanks to use of the fail-safe module in the ET 200SP, it is possible to fulfill the safety-related application requirements in a manner that is integrated in the overall automation solution.

The safety functions required for fail-safe operation are integrated in the modules. Communication with the fail-safe SIMATIC S7 CPUs is realized via PROFIsafe.

The safety application is programmed in the SIMATIC S7 F-CPU with Distributed Safety/Safety Advanced. The fail-safe input signals of the ASIsafe slave modules are read via the AS‑i bus line and are combined with any chosen further signals in the fail-safe program.

The fail-safe output signals can be output via safe SIMATIC output modules or also directly via AS‑i – with the aid of safe AS‑i output modules, e.g. SlimLine S45F safety modules, article number 3RK1405‑1SE15‑0AA2 (see “ASIsafe” в†’ “AS‑Interface Safety Modules”). No special functions are required for this in the program.

Operation with SINUMERIK 840D sl is possible with SINUMERIK software version V4.7 SP2 HF1 or higher.

Together with an ET 200SP F‑CPU 1510SP F/1512SP F (firmware V1.8 and higher) or 1515SP PC F, pre-processing of safe AS‑i signals directly in the ET 200SP station is possible, as well as the configuration of an autonomous AS‑i Safety station without a higher-level CPU.

Configuration examples of AS-Interface networks with CM AS-i Master ST and F‑CM AS‑i Safety ST for SIMATIC ET 200SP

AS-Interface configuration comprising an ET 200SP station with CM AS-i Master ST and F-CM AS-i Safety ST modules