DeviceNet™ uses CAN (Controller Area Network) for its data link layer and CIP™ (Common Industrial Protocol) for the upperlayers of the network. DeviceNet supports multiple communication hierarchies and message prioritization, and can be configured to operate in a master-slave or a distributed control architecture using peer-to-peer communication to perform actuator process control and feedback data retrieval.
Limitorque actuators with Foundation Fieldbus can act as a link active scheduler and time master for regulating communication on a fieldbus segment. The Fieldbus Foundation has tested and registered the Limitorque Device Description (DD) files to ensure interoperability with registered devices from multiple vendors. In addition, The FDT Group has certified the DTM (Device Type Manager) for use with both standalone and non-standalone frames.
HART® (Highway Addressable Remote Transducer) is a digital communication protocol that is based upon the Bell 202 telephone communication standard. By using FSK (frequency shift keying) to superimpose low level digital signals on top of an analog 4-20 mA signal, two simultaneous communications channels exist. The 4-20 mA signal communicates the primary measured value, and the digital signal communicates additional device information to the plant control system.
Limitorque actuators offer both variations of PROFIBUS in use today: PROFIBUS DP™ (Decentralized Peripherals) and PROFIBUS PA™ (Process Automation). PROFIBUS DP is used to operate sensors and actuators via a centralized controller in production (factory) automation applications.
Compatible with Limitorque non-intrusive MX multi-turn and QX quarter-turn actuators, the Profibus DP with Redcom network protocol complies with the Profibus specification 2.212_V and allows connection with a single or dual redundant channel networks (optional). The new and improved DTM (Device Type Manager) greatly reduces the time required for configuring and acquiring pertinent diagnostic information.