(http://pps2.com/images/smf/profibus/pmint_switchgear.png)
The Profibus DP MINT (PMINT) is a 1-to-1 converter device. You will need one PMINT for every legacy INCOM device (e.g. circuit breaker trip units) that you wish to connect to a Profibus network.
For more information you can download the 66A7686 Instruction Leaflet (IL) from the Moeller (a division of Eaton) web site.
http://www.moeller.pl/Documentation/AWB/AWB1230-1621.pdf (http://www.moeller.pl/Documentation/AWB/AWB1230-1621.pdf)
For your convenience, a copy of this IL is attached below.