TeSys U communication gateway for interfacing groups of up to 8 x TeSys U starter controllers connected on the same Modbus serial link to a Profibus DP field bus. On front side, it provides the Profibus DP connector, and device and communication LED status. It provides on the bottom 2 x RJ45 connectors for Modbus serial link and PC link, a connector for a 24V DC external power supply. It can be used for interfacing ATS48 soft starters and ATV31 variable speed drives to Profibus DP. To be clipped on a 35mm DIN rail. Green Premium compliant (RoHS/REACh).