Structure of the Extended Pack Profile

This is similar to the basic profile for simple servo drives and frequency converters as described above. It also defines additional functions that are realized in the drive and can be used by higher-level controls. Drives that support this extended profile can be commanded by any of position, velocity or torque values. For acceleration and torque data a preferred scaling is supported, whereas the scaling of position and velocity data can be configured very flexibly. Additional parts of the profile are the drive- and the NC-controlled homing, as well as a powerful function for high-speed probing. The Extended Pack Profile requires the SERCOS Communication Class B, which contains all functions of Class A, plus the following functions:

-- configurable telegram (telegram type no. 7)
-- extended diagnostic information and
-- configurable real-time control and status bits.

In addition to the mandatory parameters defined by the profiles, optional parameters and additional functions (e.g., automatic baud rate recognition, detection of the physical order and firmware up-/download) can be supported per the SERCOS specification.

The profiles are available as Version 1.2 and currently are implemented within the controls and drives of several suppliers.