Intro to PLC's Chapter 1

Control management

____________ PLC application involves one PLC controlling several other PLCs.

Program

A ________ is a user-developed series of instructions that directs the PLC to execute actions.

PAC

A ________ is the combination of PLC ruggedness and the functionality of a PC

Programming Device

A __________ is used to enter the desired program into the memory of the processor.

Programming Language

A _____________ Provides rules for combining the instructions so that they produce the desired actions.

Open

A(n) _________ Architecture design allows the system to be connected easily to devices and programs made by other manufacturers.

Closed

A(n) __________ Architecture is one whose design is proprietary, making it more difficult to connect to other systems.

Increased reliability, more flexibility, Lower cost, communications capability, faster response time, easier to troubleshoot, and easier to test field devices.

Benefits over PCs that PLC's provide are _______ .

Hardwiring

I/O modules are connected by _________ to the processor in a modular-type PLC configuration.

CPU, I/O, power supply, and the programming device.

What 3 parts can a typical PLC be divided into?

Fixed and Modular

What two ways are I/O's incorporated into the PLC?

Fixed I/O

______ is typical of small PLC's that come in one package with no separate, removable units. Has a set number of inputs and output connections.

Single-ended

________ PLC application involves on PLC controlling one process.

Architecture

________ can refer to PLC hardware, software, or a combination of the two.

PLC

________ is an industrial grade computer that is capable of being programmed to perform control functions.

Modular I/O

________ is divided by compartments into which separate modules can be plugged.

Relay Ladder Logic

________ is the standard programming language used with PLCs

Multitask

_________ PLC application involves one PLC controlling multiple processes.

Single-ended, multitask, and control management

_________ are 3 major types of PLC application.

Number of I/O points used, Size of control program, data collecting requirements, supervisory functions required, and future expansion.

_________ are factors affecting the memory size needed for a particular PLC installation.

Timing, counting, calculating, comparing, and processing of analog signals

_________ are tasks that PLCs are capable of performing.

PC and hand-held programming device

_________ are the two most common types of PLC programming devices.

Human machine interface

_________ is a PLC software that allows the user to monitor and control the process.

Memory

_________ is the part of a PLC that stores Data, instructions, and the control program.

Instruction set

_________ lists the different types of instructions supported by the device.

Processor (CPU)

The ______ is the "brain" of the PLC.

Proprietary

Most PLC systems are __________.

Power supply

The _______ supplies DC power to other modules that plug into the rack.

I/O system

The ________ forms the interface by which field devices are connected to the controller.

Field or real world

The terms _________ __________ are used to distinguish actual external devices that exist and must be physically wired from the internal user program that duplicates the function of relays, timers, and counters.