Profinet IRT Master is used to synchronize communication between master and slaves, while Distributed Clock fulfills the same function in the EtherCAT protocol.
Nidec’s solution, the Profinet IRT – EtherCAT Gateway, allows Profinet IRT Masters to exchange data with Control Techniques drives based on EtherCAT slave communication. With this solution, the round trip time (RTT) – the time needed to send the set point and receive the feedback – is as short as 500 μs.
The bridge consists of a PC embedded with Nidec’s ARTICS management system, Profinet and EtherCAT interfaces, and bridge software that assures the data exchange between an industrial PLC and the Nidec Control Techniques Unidrive II with a 250 μs cycle time.
This same gateway can be used to interface multiple protocols, including Ethernet/IP and Modbus TCP. Others are available upon request.