#165 - Siemens PN/PN Coupler

The PN/PN Coupler is a great product from Siemens (ref. 6ES7158-3AD10-0XA).

It has two independent PROFINET cards that enable the data transfer between two different industrial networks, X1 and X2.

Their configuration is not difficult but there are a couple of points to watch out:

> Set the IP and PROFINET name on X1, using for example PRONETA, the same information that is in the project of that network configuration

> In TIA, set the PN device number and the Topology architecture accordingly

> Deactivate the Data Status tick box, for easier data transfer, set the data transfer data types and lengths with their memory addresses and export the GDS of the X2 configuration

> On the other project, import the X2 GSD and insert into the PROFINET network topology, checking the IP, PROFINET name and device number

> The data exchange can be done through the instructions DPRD_DAT and DPWR_DAT, which have only one input and one output:

DPRD_DAT( LADDR := HW_SubModule // e.g. X1 ~ PN_X1 ~ PNPN_IN

RECORD => "MyDB".MyData);

Notes:

> Fiber optics connectors can also be used

> Safety IO can also be exchanged via the PN/PN Coupler, using PROFIsafe IN/OUT data type