This is a list of

communication protocol A communication protocol is a system of rules that allows two or more entities of a communications system to transmit information via any kind of variation of a physical quantity. The protocol defines the rules, syntax, semantics and synchroniza ...

s used for the

automation Automation describes a wide range of technologies that reduce human intervention in processes, namely by predetermining decision criteria, subprocess relationships, and related actions, as well as embodying those predeterminations in machines ...

of processes (industrial or otherwise), such as for

building automation Building automation (BAS), also known as building management system (BMS) or building energy management system (BEMS), is the automatic centralized control of a building's HVAC (heating, ventilation and air conditioning), electrical, lighting, ...

, power-system automation, automatic meter reading, and

vehicular automation Vehicular automation involves the use of mechatronics, artificial intelligence, and multi-agent systems to assist the operator of a vehicle (car, aircraft, watercraft, or otherwise).Hu, J.; Bhowmick, P.; Lanzon, A.,Group Coordinated Control ...

Process automation protocols

* AS-i – Actuator-sensor interface, a low level 2-wire bus establishing power and communications to basic digital and analog devices * BSAP – Bristol Standard Asynchronous Protocol, developed by Bristol Babcock Inc. *

CC-Link Industrial Networks The CC-Link Open Automation Networks Family are a group of open industrial networks that enable devices from numerous manufacturers to communicate. They are used in a wide variety of industrial automation applications at the machine, cell and line ...

– Supported by the CLPA * CIP (Common Industrial Protocol) – can be treated as application layer common to

DeviceNet DeviceNet is a network protocol used in the automation industry to interconnect control devices for data exchange. It utilizes the Common Industrial Protocol over a Controller Area Network media layer and defines an application layer to cover a rang ...

, CompoNet,

ControlNet ControlNet is an open industrial network protocol for industrial automation applications, also known as a fieldbus. ControlNet was earlier supported by ControlNet International, but in 2008 support and management of ControlNet was transferred to O ...

and EtherNet/IP *

– an implementation of CIP, originally by Allen-Bradley *

– an implementation of CIP, originally by Allen-Bradley * DF-1 - used by Allen-Bradley ControlLogix, CompactLogix, PLC-5, SLC-500, and MicroLogix class devices *

DNP3 Distributed Network Protocol 3 (DNP3) is a set of communications protocols used between components in process automation systems. Its main use is in utilities such as electric and water companies. Usage in other industries is not common. It was ...

- a protocol used to communicate by industrial control and utility SCADA systems * DirectNet – Koyo / Automation Direct proprietary, yet documented PLC interface *

EtherCAT EtherCAT (Ethernet for Control Automation Technology) is an Ethernet-based fieldbus system invented bBeckhoff Automation The protocol is standardized in IEC 61158 and is suitable for both hard and soft real-time computing requirements in automati ...

* Ethernet Global Data (EGD) – GE Fanuc PLCs (see also SRTP) * EtherNet/IP – IP stands for "Industrial Protocol". An implementation of CIP, originally created by

Rockwell Automation Rockwell Automation, Inc. is an American provider of industrial automation whose brands include Allen-Bradley, FactoryTalk software and LifecycleIQ Services. Headquartered in Milwaukee, Wisconsin, Rockwell Automation employs approximately 26,000 ...

* Ethernet Powerlink – an open protocol managed by the Ethernet POWERLINK Standardization Group (EPSG). *

FINS A fin is a thin component or appendage attached to a larger body or structure. Fins typically function as foils that produce lift or thrust, or provide the ability to steer or stabilize motion while traveling in water, air, or other fluids. Fin ...

Omron , styled as OMRON, is a Japanese electronics company based in Kyoto, Japan. Omron was established by in 1933 (as the ''Tateishi Electric Manufacturing Company'') and incorporated in 1948. The company originated in an area of Kyoto called ""( ja ...

's protocol for communication over several networks, including ethernet. * FOUNDATION fieldbus – H1 & HSE * HART Protocol * HostLink Protocol,

's protocol for communication over serial links. * Interbus, Phoenix Contact's protocol for communication over serial links, now part of PROFINET IO *

MECHATROLINK MECHATROLINK is an open protocol used for industrial automation, originally developed by Yaskawa and presently maintained by Mechatrolink Members Association (MMA). Mechatrolink protocol has two major variants: * MECHATROLINK-II—Defines protoco ...

– open protocol originally developed by

Yaskawa The is a Japanese manufacturer of servos, motion controllers, AC motor drives, switches and industrial robots. Their Motoman robots are heavy duty industrial robots used in welding, packaging, assembly, coating, cutting, material handling a ...

, supported by the MMA * MelsecNet, and MelsecNet II, /B, and /H, supported by Mitsubishi Electric. * Modbus PEMEX * Modbus Plus *

Modbus Modbus is a data communications protocol originally published by Modicon (now Schneider Electric) in 1979 for use with its programmable logic controllers (PLCs). Modbus has become a ''de facto'' standard communication protocol and is now a common ...

RTU or ASCII or TCP * OSGP – The Open Smart Grid Protocol, a widely use protocol for smart grid devices built on ISO/IEC 14908.1 *

OpenADR Open Automated Demand Response (OpenADR) is a research and standards development effort for energy management led by North American research labs and companies. The typical use is to send information and signals to cause electrical power-using devi ...

– Open Automated Demand Response; protocol to manage electricity consuming/controlling devices * Optomux – Serial (

RS-422 RS-422, also known as TIA/EIA-422, is a technical standard originated by the Electronic Industries Alliance that specifies electrical characteristics of a digital signaling circuit. It was meant to be the foundation of a suite of standards that ...

/485) network protocol originally developed by

Opto 22 {{Unreferenced, date=September 2009 Opto 22 is a manufacturing company specializing in hardware and software products for industrial automation, remote monitoring, and data acquisition. The company is based in Southern California and sells solid s ...

in 1982. The protocol was openly documented and over time used for industrial automation applications. * PieP – An Open Fieldbus Protocol * Profibus – by PROFIBUS & PROFINET International (PI) * PROFINET - by PROFIBUS & PROFINET International (PI) * RAPIEnet – Real-time Automation Protocols for Industrial Ethernet * Honeywell SDS – Smart Distributed System – Originally developed by

Honeywell Honeywell International Inc. is an American publicly traded, multinational conglomerate corporation headquartered in Charlotte, North Carolina. It primarily operates in four areas of business: aerospace, building technologies, performance ma ...

. Currently supported by Holjeron. * SERCOS III, Ethernet-based version of SERCOS real-time interface standard * SERCOS interface, Open Protocol for

hard real-time Real-time computing (RTC) is the computer science term for hardware and software systems subject to a "real-time constraint", for example from event to system response. Real-time programs must guarantee response within specified time constrai ...

control of motion and I/O * GE SRTP – GE Fanuc PLCs * Sinec H1 – Siemens * SynqNet – Danaher * TTEthernet – TTTech * MPI –

Multi Point Interface The Multi-Point Interface – Siemens (MPI) is a proprietary interface of the programmable logic controller SIMATIC S7 of the company Siemens. It is used for connecting the stations programming (PC or personal computer), operator consoles, and othe ...

Industrial control system protocols

MTConnect MTConnect is a manufacturing technical standard to retrieve process information from numerically controlled machine tools. As explained by a member of the team that developed it, "This standard specifies the open-source, royalty-free communicatio ...

* Open Platform Communications, formerly OLE for process control * OPC Unified Architecture *

Data Distribution Service The Data Distribution Service (DDS) for real-time systems is an Object Management Group (OMG) machine-to-machine (sometimes called middleware or connectivity framework) standard that aims to enable dependable, high-performance, interoperable, re ...

from the

Object Management Group The Object Management Group (OMG) is a computer industry standards consortium. OMG Task Forces develop enterprise integration standards for a range of technologies. Business activities The goal of the OMG was a common portable and interoperab ...

Building automation protocols

1-Wire 1-Wire is a device communications bus system designed by Dallas Semiconductor Corp. that provides low-speed (16.3 kbit/s) data, signaling, and power over a single conductor. 1-Wire is similar in concept to I²C, but with lower data rates and ...

– from Dallas/Maxim *

BACnet BACnet is a communication protocol for building automation and control (BAC) networks that use the ASHRAE, ANSI, and ISO 16484-5 standards protocol. BACnet was designed to allow communication of building automation and control systems for applic ...

– for Building Automation and Control networks, maintained by

ASHRAE The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE ) is an American professional association seeking to advance heating, ventilation, air conditioning and refrigeration The term refrigeration refers to the ...

Committee SSPC 135. * BatiBUS - merged to KNX * C-Bus Clipsal Integrated Systems Main Proprietary Protocol *

, supported by Mitsubishi Electric * DALI - Digital Addressable Lighting Interface specified in IEC 62386. * DSI - Digital Serial Interface for the controlling of lighting in building, precursor to DALI. *

Dynet DyNet is the communications network and communications protocol for Dynalite lighting automation and building automation Building automation (BAS), also known as building management system (BMS) or building energy management system (BEMS), ...

- lighting and automation control protocol developed in Sydney, Australia by the company Dynalite * EnOcean – Low Power Wireless protocol for energy harvesting and very lower power devices. * European Home Systems Protocol (EHS) - merged to KNX * European Installation Bus (EIB) named also Instabus - merged to KNX * INSTEON - SmartHome Labs Pro New 2-way Protocol based on Power-BUS. * KNX – Standard for building control. Previously Batibus/EHS/EIB *

LonTalk LonTalk is a protocol optimized for control. Originally developed by Echelon Corporation for networking devices over media such as twisted pair, powerlines, fiber optics, and RF. It is popular for the automation of various functions in industri ...

– protocol for

LonWorks LonWorks or Local Operating Network is an open standard (ISO/IEC 14908) for networking platforms specifically created to address the needs of control applications. The platform is built on a protocol created by Echelon Corporation for networking ...

technology by

Echelon Corporation Echelon Corporation was an American company which designed control networks to connect machines and other electronic devices, for the purposes of sensing, monitoring and control. Echelon is now owned by Adesto Technologies. History Echelon ...

RTU or ASCII or TCP *

oBIX oBIX (for Open Building Information Exchange) is a standard for RESTful Web Services-based interfaces to building control systems. oBIX is about reading and writing data over a network of devices using XML and URIs, within a framework specific ...

- Open Building Information Exchange is a standard for RESTful Web Services-based interfaces to building control systems developed by OASIS. * UPB - 2-way Peer to Peer Protocol * VSCP - Very Simple Control Protocol is a free protocol with main focus on building- or home-automation * xAP – Open protocol * X10 – Open standard for communication among electronic devices used for home automation (domotics) *

Z-Wave Z-Wave is a wireless communications protocol used primarily for residential and commercial building automation. It is a mesh network using low-energy radio waves to communicate from device to device, allowing for wireless control of smart home de ...

- Wireless RF Protocol *

ZigBee Zigbee is an IEEE 802.15.4-based specification for a suite of high-level communication protocols used to create personal area networks with small, low-power digital radios, such as for home automation, medical device data collection, and o ...

– Open protocol for Mesh Networks

Power system automation protocols

– Distributed Network Protocol *

IEC 60870-5 IEC 60870 part 5 Gordon R. Clarke et al, ''Practical modern SCADA protocols: DNP3, 60870.5 and related systems'', Newnes, 2004 is one of the IEC 60870 set of standards which define systems used for telecontrol (supervisory control and data acquis ...

IEC 61850 IEC 61850 is an international standard defining communication protocols for intelligent electronic devices at electrical substations. It is a part of the International Electrotechnical Commission's (IEC) Technical Committee 57 reference archit ...

* IEC 62351 – Security for IEC 60870, 61850, DNP3 & ICCP protocols

Automatic meter reading protocols

ANSI C12.18 A smart meter is an electronic device that records information such as consumption of electric energy, voltage levels, current, and power factor. Smart meters communicate the information to the consumer for greater clarity of consumption beha ...

* DLMS/IEC 62056 * IEC 61107 * M-Bus * OMS *

ZigBee Smart Energy 2.0 Zigbee is an IEEE 802.15.4-based specification for a suite of high-level communication protocols used to create personal area networks with small, low-power digital radios, such as for home automation, medical device data collection, and othe ...

ANSI C12.21 A smart meter is an electronic device that records information such as consumption of electric energy, voltage levels, current, and power factor. Smart meters communicate the information to the consumer for greater clarity of consumption beh ...

* ANSI C12.22

Automobile / Vehicle protocol buses

Controller Area Network A Controller Area Network (CAN bus) is a robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other's applications without a host computer. It is a message-based protocol, designed originally for mu ...

(CAN) – an inexpensive low-speed serial bus for interconnecting automotive components * FlexRay – a general purpose high-speed protocol with safety-critical features * IDB-1394 *

IEBus IEBus (''Inter Equipment Bus'') is a communication bus specification "between equipments within a vehicle or a chassis" of Renesas Electronics. It defines OSI model layer 1 and layer 2 specification. ''IEBus'' is mainly used for car audio a ...

J1708 Society of Automotive Engineers standard SAE J1708 is a standard used for serial communications between ECUs on a heavy duty vehicle and also between a computer and the vehicle. With respect to Open System Interconnection model (OSI), J1708 defin ...

– RS-485 based SAE specification used in commercial vehicles, agriculture, and heavy equipment. *

J1939 Society of Automotive Engineers standard SAE J1939 is the vehicle bus recommended practice used for communication and diagnostics among vehicle components. Originating in the car and heavy-duty truck industry in the United States, it is now widely ...

and ISO11783 – an adaptation of CAN for agricultural and commercial vehicles *

Keyword Protocol 2000 Keyword Protocol 2000, abbreviated KWP2000, is a communications protocol used for on-board vehicle diagnostics systems (OBD). This protocol covers the application layer in the OSI model of computer networking. The protocol is standardized by Inter ...

(KWP2000) – a protocol for automotive diagnostic devices (runs either on a serial line or over CAN) *

Local Interconnect Network LIN (Local Interconnect Network) is a serial network protocol used for communication between components in vehicles. It is a single wire, serial network protocol that supports communications up to 19.2 Kbit/s at a bus length of 40 meters. The need ...

(LIN) – a very low cost in-vehicle sub-network *

Media Oriented Systems Transport MOST (Media Oriented Systems Transport) is a high-speed multimedia network technology optimized by the automotive industry. It can be used for applications inside or outside the car. The serial MOST bus uses a daisy-chain topology or ring topolo ...

(MOST) – a high-speed multimedia interface * Vehicle Area Network (VAN) * UAVCAN - a lightweight protocol for in-vehicle communication over CAN or Ethernet

References

{{List of Automation Protocols Industrial Ethernet Control engineering