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
DC-BUS – communication over DC power lines, originally by Yamar Electronics Ltd
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
DirectNet – Koyo / Automation Direct proprietary, yet documented PLC interface
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
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
IO-Link, for sensors, actuators and such
MECHATROLINK – open protocol originally developed by Yaskawa, supported by the MMA
MelsecNet, and MelsecNet II, /B, and /H, supported by Mitsubishi Electric.
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
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 International.
RAPIEnet – Real-time Automation Protocols for Industrial Ethernet
Honeywell SDS – Smart Distributed System – Originally developed by Honeywell. Currently supported by
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 – Multi Point Interface