(continuous function chart) A graphical programming language (an extension of the IEC 61131-3 standard) based on the function block diagram language that works like a flowchart. However, no networks are used and free positioning of graphic elements is possible, which allows feedback loops. For each block, the inputs are on the left and the outputs on the right. You can link the block outputs to the inputs of other blocks to create complex expressions.
An inseparable group of 5 analog and/or digital I/O electronic modules in a single reference.
The arrangement and interconnection of hardware components within a system and the hardware and software parameters that determine the operating characteristics of the system.
continuous function chart language
A graphical programming language (an extension of the IEC61131-3 standard) based on the function block diagram language that works like a flowchart. However, no networks are used and free positioning of graphic elements is possible, which allows feedback loops. For each block, the inputs are on the left and the outputs on the right. You can link the block outputs to inputs of other blocks to create complex expressions.
(digital input/output) An individual circuit connection at the electronic module that corresponds directly to a data table bit. The data table bit holds the value of the signal at the I/O circuit. It gives the control logic digital access to I/O values.
(direct on line starter) The direct on line starter is the simplest kind of starter that connects the motor directly to the power supply through a three-phase contactor. The direct on line starter usually consists of a contactor, circuit breakter and an overload relay for protection against any damage.
(device type manager) Classified into 2 categories:
oDevice DTMs connect to the field device configuration components.
oCommDTMs connect to the software communication components.
The DTM provides a unified structure for accessing device parameters and configuring, operating, and diagnosing the devices. DTMs can range from a simple graphical user interface for setting device parameters to a highly sophisticated application capable of performing complex real-time calculations for diagnosis and maintenance purposes.
The short name of the ARRAY element.
A part of a machine including sub-assemblies such as conveyors, turntables, and so on.
(expansion input/output module) Either a digital or analog module that adds additional I/O to the base controller.
(function block diagram) One of 5 languages for logic or control supported by the standard IEC 61131-3 for control systems. Function block diagram is a graphically oriented programming language. It works with a list of networks, where each network contains a graphical structure of boxes and connection lines, which represents either a logical or arithmetic expression, the call of a function block, a jump, or a return instruction.
Rectangular connector for electrical signals with frequencies below 3 MHz, complying with IEC 60807-2.
Part 3 of a 3-part IEC standard for industrial automation equipment. IEC 61131-3 is concerned with controller programming languages and defines 2 graphical and 2 textual programming language standards. The graphical programming languages are ladder diagram and function block diagram. The textual programming languages include structured text and instruction list.
(instruction list) A program written in the language that is composed of a series of text-based instructions executed sequentially by the controller. Each instruction includes a line number, an instruction code, and an operand (refer to IEC 61131-3).
A program written in the instruction list language that is composed of a series of text-based instructions executed sequentially by the controller. Each instruction includes a line number, an instruction code, and an operand (see IEC 61131-3).
A graphical representation of the instructions of a controller program with symbols for contacts, coils, and blocks in a series of rungs executed sequentially by a controller (see IEC 61131-3).
(ladder diagram) A graphical representation of the instructions of a controller program with symbols for contacts, coils, and blocks in a series of rungs executed sequentially by a controller (refer to IEC 61131-3).
Consists of several functions and/or equipment.
(normally open) A contact pair that opens when the actuator is de-energized (no power is applied) and closes when the actuator is energized (power is applied).
A system of interconnected devices that share a common data path and protocol for communications.
(optimized terminal block) Used in the context of STB I/O distributed modules.
A project file contains information about the developer and purpose of a project, the configuration of the targeted logic controller and associated expansion modules, the source code of a program, symbols, comments, and all other related information.
A standard type of 8-pin connector for network cables defined for Ethernet.
(sequential function chart) A language that is composed of steps with associated actions, transitions with associated logic condition, and directed links between steps and transitions. (The SFC standard is defined in IEC 848. It is IEC 61131-3 compliant.)
(serial synchronous interface) A common interface for relative and absolute measurement systems like encoders.
(structured text) A language that includes complex statements and nested instructions (such as iteration loops, conditional executions, or functions). ST is compliant with IEC 61131-3.
(terminal block) The component that mounts in an electronic module and provides electrical connections between the controller and the field devices.
(thin film transmission) A technology used in many HMI display devices (also known as active matrix).
