Hello, 

I am here requesting some orientation on my task to do,

Here is the scenario:

We have 2 machine running a Siemens PLC S7-1500 with Safety Inputs (ESTOP, Interlocks, etc.) in ET200 (using safety card inputs), Both machine work separately, that is mean if you press an ESTOP on machine 1 does not affect machine 2, vice verse.

I would like to link the ESTOP Signals (might be send a safety output) from Machine 1 to Machine 2,

on this way we will affect the second machine if you pressed the ESTOP in the first machine and vice verse.

So, I am thinking to implement a ET200 in one the machine and share safety signal by IO,

but I wonder if possible to send those safety signals over PROFISAFE without add any more hardware or might be just a coupler, I think.

That is my situation, any help or comment will be helpful, 

Thank you All

That's exactly what I was looking for to begin to work on,

Thank you so much, I will update the post once implemented or if any issue come up.