dVOC

dVOC is a term used in the field of motor control and drive electronics to refer to a community-driven project and protocol for a standardized device profile for motor drives and related controllers. The central aim of dVOC is to enable interoperable communication between host controllers (such as CNC controllers, robotics controllers, or PLCs) and drive devices (such as servo drives, variable frequency drives, and motor controllers) across common industrial networks, by providing a unified object model and command set.

The core concept of dVOC is a defined object dictionary or parameter set that exposes drive parameters, control commands, status information, and fault reporting in a consistent way. This standardization reduces vendor-specific integration work, allowing software running on a host to configure, start, monitor, and fault-drive equipment without bespoke adapters for each vendor. The protocol typically supports a state machine for drive operation, including initialization, enable, operation, and safe fault handling, along with mechanisms for parameter serialization, parameter transfer, and versioning.

dVOC implementations exist in open-source firmware and software projects and are commonly used on CAN and CAN FD networks, with extensions and ports for other buses in development. The scope remains evolvable, with ongoing updates and community contributions. dVOC is not a single company-backed product but rather a collaborative framework intended to improve portability and interoperability in motor drive systems.