According to the IEC standard, % is a prefix that identifies internal memory addresses in the logic controller to store the value of program variables, constants, I/O, and so on.
A program including configuration data, symbols, and documentation.
An open industry-standard communication protocol and device profile specification (EN 50325-4).
The arrangement and interconnection of hardware components within a system and the hardware and software parameters that determine the operating characteristics of the system.
A network containing logic controllers, SCADA systems, PCs, HMI, switches, ...
Two kinds of topologies are supported:
oflat: all modules and devices in this network belong to same subnet.
o2 levels: the network is split into an operation network and an inter-controller network.
These two networks can be physically independent, but are generally linked by a routing device.
(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.
(electronic data sheet) A file for fieldbus device description that contains, for example, the properties of a device such as parameters and settings.
The short name of the ARRAY element.
(full load amps) A motor characteristic that you can find on the motor plate. It represents the current that the motor draws at the rated voltage and rated load. This characteristic is named as the motor full load current.
(full load current) A motor characteristic that you can find on the motor plate. It represents the current that the motor draws at the rated voltage and rated load. This characteristic is named as the motor full load current.
A programming unit that has 1 input and returns 1 immediate result. However, unlike FBs, it is directly called with its name (as opposed to through an instance), has no persistent state from one call to the next and can be used as an operand in other programming expressions.
Examples: boolean (AND) operators, calculations, conversions (BYTE_TO_INT)
(human machine interface) An operator interface (usually graphical) for human control over industrial equipment.
(input/output)
The protocol that allows communications between many devices connected to the same network.
A system of interconnected devices that share a common data path and protocol for communications.
An addressable device on a communication network.
(process data object) An unconfirmed broadcast message or sent from a producer device to a consumer device in a CAN-based network. The transmit PDO from the producer device has a specific identifier that corresponds to the receive PDO of the consumer devices.
A command that causes the controller to scan the application program, read the physical inputs, and write to the physical outputs according to solution of the logic of the program.
A command that causes the controller to stop running an application program.
(terminal block) The component that mounts in an electronic module and provides electrical connections between the controller and the field devices.
A memory unit that is addressed and modified by a program.
A type encoded in a 16-bit format.
