Good Day!

We currently have a project that requires the input (Digital Input for example) of PLC1 to be configured as an interlock in the program of PLC2. I have read other threads that it is possible to communicate if both plcs are in the same database. Our problem was that the two PLCs are of different databases and are not interconnected through netpro.

My question is that, is it possible for us to communicate the two even if they are not interconnected through netpro? If it is possible, how? If not, then what would be the best way to have it working?

Thanks a lot!!

 

Hi,

You have not mentioned what PLC's or comms that you are using. It possible to connect the S7 300 series with a simple MPI interface and using GD (global data) tables, these are limited in the amount data that can be passed but are simple to setup. The help files are good and should help.

Kevin

 

Hello

if you can't integrate the two PLC in the same project you can exchange data via X-GET and X-PUT functions (as I remember well they're SFC58 and SFC59).

Regards,
Gabriele