Basic Configuration of a PLC

Programmable logic controllers are manufactured devices in series, which are designed with general problems in mind. All that is required for control engineering are logic elements, memory functions, time elements, counters, etc., which are designated from the manufacturer and are connected to a functional controller by programmed code. The controllers are offered in different functional units.They differ mainly by the number of possible:

Larger controllers are individually built in modular construction from individual modules. With this modular system, controllers run from the basic hardware, that PLC systems arrange, which can be adapted to the application accordingly. For smaller control tasks, compactly developed controllers are offered. They represent self closed units with a pre-defined number of inputs and outputs.

The following, in principle, belong to a programming controller:

Automation equipment essentially contains:

Design of a program controller: