A main controller may be used to provide integrated, centralized, and optimized handling of telematics data in welding arrangements. The main controller may receive from other components of a welding arrangement, telematics data, and may apply at least some processing to the telematics data, to enable use of the telematics data by a remote entity. The telematics data may comprises data relating to an engine used in driving one or more components of the welding arrangement, data relating to one or more components of the welding arrangement, and/or data relating to welding operations performed via the welding arrangement. The processing of telematics data may comprise formatting data in accordance with a single standard format, digitizing analog data, and/or processing data for communication to the remote entity. The main controller may provide telematics client and/or host node functions, such as based on the controller area network (CANBus) protocol.