Programmable Controllers

The first programmable controller is called

Programmable Logic Controller (PLC)

Programmable logic relays (PLR) main advantages

Very easy to program and uses smaller control circuit

PAC Advantages

Combine the latest techs, programming methods and communication network of PCs

Programmable controllers include?

PLC’s, PAC’s and PLR’s

4 basic sections on a PC

-power supply

-Input/output

-Processor

-Programming

Input section is designed receive info from pushbuttons, switches and etc

Output sections is designed to deliver the output voltage required to control loads

Discrete I/Os

Represent separate and distinct (on/off) (open/closed) (energized/de-energized)

Data I/Os

Produce or receive a variable signal

-Analog (monitoring and controlling analog voltages and current)

-Binary coded decimal (BCD)

Processor Section (Brain of the PC and referred to as CPU)

Organizes all control activity, performs logical decisions and control the outputs

What section is referred to as the brain of the PC?

Processor section

This section is known as the CPU

processing section

What section allows inputs into the controller through a keyboard?

Programming section

What the types of programming languages are used for programming controllers?

-line diagrams

-boolean

-function blocks

-english statement