The CAN in Automation (CiA) international users’ and manufacturers’ group has released version 2.1 of the CANopen device profile for fluid power proportional valves and hydrostatic transmissions. The specification is based on the bus-independent profile by VDMA (German Association of Machine Builders). Compared to the predecessor version published in 2005, the Finite State Automation (FAS) has been improved. The control- and status-word have been updated, as well. Some parameters have been removed, and others have been added. The CiA 408 profile is intended originally for hydraulic valves, hydrostatic pumps, and transmissions. It is suitable for pneumatic devices, too. Experts from Atos, Bosch Rexroth, and Moog participated actively in the development of the CiA 408 profile, supported by other experts reviewing the document.