TABLE OF CONTENTS | EEROM | Electrically erasable read only memory | |
| FB | Function block | |
| FBD | Function Block Diagram graphical language | |
| FIP | Fieldbus implementation based on a French standard | |
| HVAC | Heating, venting and air conditioning system | |
| IEC | International Electro-technical Commission | |
| IL | Instruction List language | |
| ISA | Instrument Society of America | |
| ISO | International Standards Organisation | |
| ISP | Integrated Software Project - Fieldbus implementation using existing IEC standards | |
| LD | Ladder Diagram graphical language | |
| MAP | Manufacturing Automation Protocol | |
| MMS | Manufacturing Message Specification | |
| OSI | Open Systems Interconnection | |
| PC | Personal computer [1] | |
| PID | Three term controller, proportional, integral, derivative closed-loop control algorithm | |
| PLC | Programmable logic controller | |
| POU | Program organization unit | |
| RAM | Random access memory | |
| SCADA | Supervisory, control and data acquisition system | |
| SFC | Sequential Function Chart graphical language | |
| ST | Structured Text language |
The following font and style is used to distinguish examples of textual programming language from ordinary text:
BEGIN A := A + 100.5; (* Comment *) END
The suppression of superfluous detail in textual language examples is indicated using an ellipsis as follows:
...
| Note | From 1 January 1997, the IEC has changed the numbering scheme for industrial standards. Some standards which formerly had a four digit identifier have been renumbered by prefixing the identifier with a 6 . The full identifier for the PLC standard, formerly IEC 1131 is now IEC 61131. Similarly, the IEC Function Block standard IEC... |
