TCP data transfer between 2 Siemens PLC's on different subnets?

[russg]

Hi,

If we have PLCs on different subnets is it possible to do TCP comms data transfer between them? I'm assuming if we use a routing switch and add that into the PLC network ports router set up it will see the PLC and data will transfer?

Thanks

 

[cardosocea]

Wouldn't the PLC be dumb as to where and what stands between itself and the other PLC? Shouldn't routing be enough to transfer the data from one to the other?

 

[mk42]

as long as the network is set up correctly (PLCs have gateways assigned, etc) should work fine.

 

[Corsair]

It seems the most common mistake is to not have a correct gateway address entered.