This is a list of communication protocols used for the automation of processes (industrial or otherwise), such as for building automation, power-system automation, automatic meter reading, and vehicular automation. 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 – Supported by the CLPA CIP (Common Industrial Protocol) – can be treated as application layer common to DeviceNet, CompoNet, ControlNet and EtherNet/IP ControlNet – an implementation of CIP, originally by Allen-Bradley DeviceNet – 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 - a protocol used to communicate by industrial control and utility SCADA systems DirectNet – Koyo / Automation Direct proprietary, yet documented PLC interface EtherCAT 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 Ethernet Powerlink – an open protocol managed by the Ethernet POWERLINK Standardization Group (EPSG). FINS, Omron's protocol for communication over several networks, including ethernet. FOUNDATION fieldbus – H1 & HSE HART Protocol HostLink Protocol, Omron's protocol for communication over serial links. Interbus, Phoenix Contact's protocol for communication over serial links, now part of PROFINET IO MECHATROLINK – open protocol originally developed by Yaskawa, supported by the MMA MelsecNet, and MelsecNet II, /B, and /H, supported by Mitsubishi Electric. Modbus PEMEX Modbus Plus Modbus 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; protocol to manage electricity consuming/controlling devices Optomux – Serial (RS-422/485) network protocol originally developed by Opto 22 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. Currently supported by Holjeron. SERCOS III, Ethernet-based version of SERCOS real-time interface standard SERCOS interface, Open Protocol for hard real-time control of motion and I/O GE SRTP – GE Fanuc PLCs Sinec H1 – Siemens SynqNet – Danaher TTEthernet – TTTech MPI