Hello to all! Can someone please explain me what is the difference between Technology and Fail-safe CPUs? 

I am specificaly trying to compare the CPU 1515TF-2 PN and CPU 1515F-2 PN. According to the product description, they are pretty much similar (TF CPU can also be used for the fail-safe applications, have PROFIsafe protocol etc.)

Thanks in advance!

S7-1500T* is for PLCs intended for motion control (my opinion) or other technology objects (TOs) handled within the PLC.

Snippet from an older Siemens article about TOs may help:

https://support.industry.siemens.com/cs/de/de/view/109743134

In comparison to SIMATIC S7-1500, the SIMATIC S7-1500T additionally supports the expanded synchronous functions. They offer the user the following further functions:

• Gearing can also create an absolute coupling of the slave axis to the master axis, besides the relative coupling.
• Besides gearing, the SIMATIC S7-1500T also offers support to curve synchronization, via which the coupling of two axes can be carried out with the help of a generally formulated transmission function.
• For a synchronous coupling of two axes, the actual position (actual value coupling) of another axis of an external encoder can be also be used as conductance.

Andzoni

Hello to all! Can someone please explain me what is the difference between Technology and Fail-safe CPUs? 

I am specificaly trying to compare the CPU 1515TF-2 PN and CPU 1515F-2 PN. According to the product description, they are pretty much similar (TF CPU can also be used for the fail-safe applications, have PROFIsafe protocol etc.)

Thanks in advance!

Hi Andzoni,

you will find PLCs as:

• Standard
• Failsafe F
• Technology T
• Technology and Failsafe TF

A Technology PLC provides more functionality regarding motion control.

Kind regards
Stefan