Myostat recently released an integrated EtherCAT Cool Muscle with CiA402 support and separate drive/controller power. This PDF give a quick overview of the motor line.
The EtherCAT Cool Muscle Bridge is the interface (device) that connects Muscle Corporation’s Integrated AC Servo System, Cool Muscle 2 and/or Cool Muscle 2 (hereafter referred to as CM1, CM2 or CM1/ CM2 or collectively called Cool Muscle or CM) to an EtherCAT network system.