Final Exam Study Guide

Question 1

In a non energized relay coil there is a path thru________

Answer 1

the NC contacts

Question 2

A switch pole is the_________

Answer 2

internal conductor

Question 3

What file contains the main program

Answer 3

Program file 2

Question 4

In a TON timer when ACC and PRE what is the status of the EN and DN bits

Answer 4

EN-ture

DN-flase

Question 5

Why would we put a one shot devise in a ladder logic

Answer 5

They are used with counter reset instruction when the counter must start a new count before the reset input contacts return to their normal state

Question 6

In a up counter when is the OV bit high

Answer 6

When the counter increments above the maximum positive value.

Question 7

What is the SUS instruction used for

Answer 7

used to trap and identify specific conditions during system troubleshooting and program debugging

Question 8

What is the hysteresis range for a ladder

Answer 8

19-26; 26 turns on 19 turns off

Question 9

Networking standard that takes advantage of commercial off the shelf hardware

Answer 9

Ethernet I/P

Question 10

How do you name a subroutine in an SLC500

Answer 10

JSR, SBR, RET

Question 11

Should a jump instruction be programmed into a MCR zone?

Answer 11

NO?

Question 12

Jump instruction must have the same ________ number to be used on different rung

Answer 12

reference

Question 13

_______________made has the memory address of the data supplied in the instruction

Answer 13

Direct addressing

Question 14

Indirect addressing mode is identified how

Answer 14

[ ]

Question 15

Indexed addressing mode is identified how

Answer 15

and the logical address referred to as the base addresss

Question 16

___________can be used to determine if two bits are the dame in different words of data

Answer 16

AND logic

Question 17

How does an FLL instruction transfer data

Answer 17

copies the contents of one register location to a specified number of other register loctioans

Question 18

What is the starting address for SQO and SQC instructions

Answer 18

N7

Question 19

Analog modules

Answer 19

Voltage and current sensing Inputs

Temperature Sensors etc.

Question 20

Ladder logic is based on traditional

Answer 20

relay ladder logic

Question 21

What is the structured text language

Answer 21

BASIC, C, or PACAL

Question 22

What is sequential function chart

Answer 22

GRAFCET this is a graphical language used most often for sequential control problems.
SFC is often used for the basic sequential program flow

Question 23

Function block diagrams inputs are the______ and outputs are on the _________

Answer 23

Left

Right

Question 24

A for-do loop

Answer 24

allows you to efficiently write a loop that needs to execute a specific number of times.

Question 25

in proportional control how are error and proportional gain related

Answer 25

The control effort is proportional to the error in a proportional control system, and that’s what makes it a proportional control system. If it doesn’t have that property, it isn’t a proportional control systems.