Question 1

If the scan time is too long,a watchdog error will be declared.

Accepted Answer

A) True 
 B)False  True

Question 2

Assume an open in the field wiring is suspected between the output module and output load device.This condition would be confirmed if:

Accepted Answer

A) full output voltage was measured at the module and 0 voltage at the load. 
B) full output voltage was measured at the load and 0 voltage at the module. 
C) the output status indicator on the module is on and the load is not operating. 
D) the output status indicator on the module is off and the load is not operating. 
A) full output voltage was measured at the module and 0 voltage at the load. 
B) full output voltage was measured at the load and 0 voltage at the module. 
C) the output status indicator on the module is on and the load is not operating. 
D) the output status indicator on the module is off and the load is not operating. A

Question 3

PLC malfunctions due to electrical noise usually produce temporary occurrences of operating errors.

Accepted Answer

A) True 
 B)False  True

Question 4

One of the diagnostic checks carried out by the processor is the proper operation of all I/O devices.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following would not normally be located within the PLC enclosure?

Accepted Answer

A) I/O modules 
B) Limit switch 
C) Master control relay 
D) Isolation transformer 
A) I/O modules 
B) Limit switch 
C) Master control relay 
D) Isolation transformer

Question 6

A good location for a PLC enclosure is close to:

Accepted Answer

A) the machine or processor. 
B) large ac motors. 
C) high frequency welders. 
D) annealing furnaces. 
A) the machine or processor. 
B) large ac motors. 
C) high frequency welders. 
D) annealing furnaces.

Question 7

The cross reference function allows you to view the transition history of a data table value.

Accepted Answer

A) True 
 B)False

Question 8

An enclosure is used to shield the controller from electrical noise and airborne contaminants.

Accepted Answer

A) True 
 B)False

Question 9

Which of the choices of the troubleshooting guide shown indicates a problem with the wiring to the output device or the output device itself?

Accepted Answer

A) Condition (a) 
B) Condition (b) 
C) Condition (c) 
D) Condition (d) 
A) Condition (a) 
B) Condition (b) 
C) Condition (c) 
D) Condition (d)

Question 10

The data monitor feature of a PLC may allow you to:

Accepted Answer

A) change the radix or data format. 
B) store data for an instruction prior to use. 
C) view data within an instruction. 
D) all of these. 
A) change the radix or data format. 
B) store data for an instruction prior to use. 
C) view data within an instruction. 
D) all of these.

Question 11

The status indicator on an input module will normally be illuminated if the input device is off and examined for an off condition.

Accepted Answer

A) True 
 B)False

Question 12

Electrical noise can be coupled into a PLC system:

Accepted Answer

A) by an electrostatic field. 
B) through electromagnetic induction. 
C) by a fiber optic system. 
D) both a and b. 
A) by an electrostatic field. 
B) through electromagnetic induction. 
C) by a fiber optic system. 
D) both a and b.

Question 13

Communications protocol is a standardized method for establishing communications between different PLC devices.

Accepted Answer

A) True 
 B)False

Question 14

Certain input field devices may have a small leakage current when they are:

Accepted Answer

A) in the on state. 
B) in the off state. 
C) examined for an on condition. 
D) examined for an off condition. 
A) in the on state. 
B) in the off state. 
C) examined for an on condition. 
D) examined for an off condition.

Question 15

Proper grounding procedures for a PLC installation specify that:

Accepted Answer

A) all enclosures,CPU and I/O chassis,and power supplies be connected to a single low-impedance ground. 
B) paint or nonconductive materials should be scraped away to provide good ground connections. 
C) all ground connections should be made using star washers. 
D) all of these. 
A) all enclosures,CPU and I/O chassis,and power supplies be connected to a single low-impedance ground. 
B) paint or nonconductive materials should be scraped away to provide good ground connections. 
C) all ground connections should be made using star washers. 
D) all of these.

Question 16

Typically,PLC systems installed inside an enclosure can withstand a maximum of:

Accepted Answer

A) 60$\degree$C outside the enclosure. 
B) 50$\degree$C outside the enclosure. 
C) 60$\degree$C inside the enclosure. 
D) 50$\degree$C inside the enclosure. 
A) 60$\degree$C outside the enclosure. 
B) 50$\degree$C outside the enclosure. 
C) 60$\degree$C inside the enclosure. 
D) 50$\degree$C inside the enclosure.

Question 17

The I/O module input and output status lights:

Accepted Answer

A) are found only on analog modules. 
B) indicate the status of the inputs and outputs. 
C) indicate whether the process field devices are faulty. 
D) are not used in the troubleshooting process. 
A) are found only on analog modules. 
B) indicate the status of the inputs and outputs. 
C) indicate whether the process field devices are faulty. 
D) are not used in the troubleshooting process.

Question 18

The input wiring or device is suspected as being the source of a PLC problem.If this circuit is not at fault,then the status indicator on the input module should be illuminated when the input device is:

Accepted Answer

A) closed and programmed for an XIC condition. 
B) open and programmed for an XIO condition. 
C) closed,regardless of how it is programmed. 
D) open,regardless of how it is programmed. 
A) closed and programmed for an XIC condition. 
B) open and programmed for an XIO condition. 
C) closed,regardless of how it is programmed. 
D) open,regardless of how it is programmed.

Question 19

The offline programming mode permits the user to change the program during the machine operation.

Accepted Answer

A) True 
 B)False

Question 20

A bleeder resistor can be connected to drain off unwanted module leakage current.

Accepted Answer

A) True 
 B)False

If the scan time is too long,a watchdog error will be declared.

Assume an open in the field wiring is suspected between the output module and output load device.This condition would be confirmed if:

PLC malfunctions due to electrical noise usually produce temporary occurrences of operating errors.

One of the diagnostic checks carried out by the processor is the proper operation of all I/O devices.

Which of the following would not normally be located within the PLC enclosure?

A good location for a PLC enclosure is close to:

The cross reference function allows you to view the transition history of a data table value.

An enclosure is used to shield the controller from electrical noise and airborne contaminants.

Which of the choices of the troubleshooting guide shown indicates a problem with the wiring to the output device or the output device itself?

The data monitor feature of a PLC may allow you to:

The status indicator on an input module will normally be illuminated if the input device is off and examined for an off condition.

Electrical noise can be coupled into a PLC system:

Communications protocol is a standardized method for establishing communications between different PLC devices.

Certain input field devices may have a small leakage current when they are:

Proper grounding procedures for a PLC installation specify that:

Typically,PLC systems installed inside an enclosure can withstand a maximum of:

The I/O module input and output status lights:

The input wiring or device is suspected as being the source of a PLC problem.If this circuit is not at fault,then the status indicator on the input module should be illuminated when the input device is:

The offline programming mode permits the user to change the program during the machine operation.

A bleeder resistor can be connected to drain off unwanted module leakage current.

Programmable Logic Controllers Plcs: an Overview

Plc Hardware Components

Number Systems and Codes

Fundamentals of Logic

Basics of Plc Programming

Developing Fundamental Plc Wiring Diagrams and Ladder Logic Programs

Programming Timers

Programming Counters

Program Control Instructions

Data Manipulation Instructions

Math Instructions

Sequencer and Shift Register Instructions

Process Control,network Systems and Scada

Controllogix Controllers - Part 1 - Memory and Project Organization

Controllogix Controllers - Part 2 - Bit Level Programming

Controllogix Controllers - Part 3 - Programming Timers

Controllogix Controllers - Part 4 - Programming Counters

Controllogix Controllers - Part 5 - Math,comparison,and Move Instructions

Controllogix Controllers - Part 6 - Function Block Programming

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Exam 13: Plc Installation Practices,editing,and Troubleshooting

If the scan time is too long,a watchdog error will be declared.

Assume an open in the field wiring is suspected between the output module and output load device.This condition would be confirmed if:

PLC malfunctions due to electrical noise usually produce temporary occurrences of operating errors.

One of the diagnostic checks carried out by the processor is the proper operation of all I/O devices.

Which of the following would not normally be located within the PLC enclosure?

A good location for a PLC enclosure is close to:

The cross reference function allows you to view the transition history of a data table value.

An enclosure is used to shield the controller from electrical noise and airborne contaminants.

Which of the choices of the troubleshooting guide shown indicates a problem with the wiring to the output device or the output device itself?

The data monitor feature of a PLC may allow you to:

The status indicator on an input module will normally be illuminated if the input device is off and examined for an off condition.

Electrical noise can be coupled into a PLC system:

Communications protocol is a standardized method for establishing communications between different PLC devices.

Certain input field devices may have a small leakage current when they are:

Proper grounding procedures for a PLC installation specify that:

Typically,PLC systems installed inside an enclosure can withstand a maximum of:

The I/O module input and output status lights:

The input wiring or device is suspected as being the source of a PLC problem.If this circuit is not at fault,then the status indicator on the input module should be illuminated when the input device is:

The offline programming mode permits the user to change the program during the machine operation.

A bleeder resistor can be connected to drain off unwanted module leakage current.

Programmable Logic Controllers Plcs: an Overview

Plc Hardware Components

Number Systems and Codes

Fundamentals of Logic

Basics of Plc Programming

Developing Fundamental Plc Wiring Diagrams and Ladder Logic Programs

Programming Timers

Programming Counters

Program Control Instructions

Data Manipulation Instructions

Math Instructions

Sequencer and Shift Register Instructions

Process Control,network Systems and Scada

Controllogix Controllers - Part 1 - Memory and Project Organization

Controllogix Controllers - Part 2 - Bit Level Programming

Controllogix Controllers - Part 3 - Programming Timers

Controllogix Controllers - Part 4 - Programming Counters

Controllogix Controllers - Part 5 - Math,comparison,and Move Instructions

Controllogix Controllers - Part 6 - Function Block Programming

Filters