Common automation related acronyms and their meanings
| Acronym | Meaning | Acronym | Meaning |
|---|---|---|---|
| SCADA | Supervisory Control & Data Acquisition | PLC | Programmable Logic Controller |
| HMI | Human Machine Interface | RTU | Remote Terminal Unit |
| RIO | Remote I/O | RF | Radio Frequency |
| PID | Proportional Integral Derivative (feedback control) | MSB | Most Significant Bit |
| MODICON | MOdular DIgital CONtoller | MMI | Man Machine Interface |
| LSB | Least Significant Bit | LL | Ladder Logic |
| ISO | International Standards Organization | I/O | Input(s) and/or Output(s) |
| IEEE | Institute of Electrical and Electronic Engineers | IEC | International Electrotechnical Commission |
| EMI | ElectroMagnetic Interference | EIA | Electronic Industries Association |
| DIO | Distributed I/O | CSA | Canadian Standards Association |
| BCD | Binary Coded Decimal | ASCII | American Standard Code for Information Interchange |
| KISS | Keep it simple, stupid | TCP/IP | Transmission Control Protocol / Internet Protocol |
| DTE | Data Terminal Equipment | DCE | Data Circuit-terminating Equipment |
| R&D | Research & Development | RTD | Research & Technical Development |
| SAE | System Architecture Evolution | ABS | Anti-Blocking System |
| ADSL | Asymmetric Digital Subscriber Line | AE | Alarm and Events |
| SMTP | Simple Mail Transfer Protocol | IMAP | Internet Message Access Protocol |
| POP | Post Office Protocol | MBP | Modbus Plus |
| SI | Systems Integrator | BER | Basic Encoding Rules |
| HTTP | Hypertext Transfer Protocol | HVAC | Heat, Ventilation, Air Conditioning |
| DH | Data Highway | SPI | Serial Peripheral Interface |
| PDU | Protocol Data Unit | EEPROM | Electrically Erasable Programmable Read Only Memory |
| RAM | Random Access Memory | FB | Field Bus |
| JPL | Jet Propulsion Laboratory | RTOS | Real-Time Operating System |
| LAMP Stack | Linux, Apache, MySQL, PHP Stack | SQL | Structured Query Language |
| LEMP Stack | Linux, Nginx, MySQL, PHP Stack | SSH | Secure Shell |