Flex Automation Chapters 5, 6, 7
There are ______________________________ rules accepted as standard in the control industry for creating relay logic diagrams.
9
Which expression is a Sum of Product (SOP) type? A. AB+CD B. (A+B)(C+D) C. AB+(CD+E) D. None of the above.
A. AB+CD
The address for the port labeled in the following image is ____. A. I: 1/1 B. I: 0/1 C. I: 1/0 D. None of the above.
A. I: 1/1
Holds the input bit status of the input modules
A. Input
The following truth table is for a(n) ____. A B Y 0 0 1 0 1 1 1 0 1 1 1 0 A. NAND gate B. AND gate C. OR gate D. NOR gate
A. NAND gate
The following ladder logic diagram is for a(n) ____. I:1/0 (closed)-> I:1/1 (closed)-> O:2/0 A. OR gate B. NOR gate C. AND gate D. NAND gate
A. OR gate
The following symbol displayed is for a(n) ____. A. OR gate B. NOR gate C. AND gate D. None of the above.
A. OR gate
A. Option A B. Option B C. Option C D. Option D E. Option E F. Option F AND
A. Option A
In the PLC logic circuit shown, what are the slot addresses for the discrete and analog I/O modules? A. Slots 1, 2, 3, and 4 are for the discrete I/O modules, while slots 5, 6, 7, and 8 are for the analog I/O modules. B. Slots 1, 2, 3, 4, 5, and 6 are for discrete I/O modules, while slots 7 and 8 are for the analog I/O modules. C. All ports on the eight modules can be used as discrete I/O modules. D. All ports on the eight modules can be used for either discrete or analog I/O devices.
A. Slots 1, 2, 3, and 4 are for the discrete I/O modules, while slots 5, 6, 7, and 8 are for the analog I/O modules.
The following truth table is for a(n) ____. A B Y 0 0 1 0 1 0 1 0 0 1 1 1 A. XNOR gate B. XOR gate C. NOR gate D. NAND gate
A. XNOR gate
The following ladder logic diagram is for a(n) ____. (I:1/0 and closed I:1/1) in parallel with (closed I:1/0 and I:1/1) -> O:2/0 A. XOR gate B. XNOR gate C. NOR gate D. NAND gate
A. XOR gate
The device that must be placed on the right corner of a rung in a relay logic diagram is a(n) ____ device. A. output B. input C. discrete D. indiscrete
A. output
How many standard rules are there for an RLD diagram? A. 10 B. 9 C. 8 D. 7
B. 9
The input port addresses labeled in the image are ____. A. I: 1/0 through I: 1/11 B. I: 0/1 through I: 0/11 C. I: 0/0 through I: 0/11 D. I: 1/0 through I: 1/11
B. I: 0/1 through I: 0/11
The address for the port labeled in the following image is ____. A. I: 4 B. I: 0/4 C. I: 4/0 D. None of the above.
B. I: 0/4
The following expression is used for a(n) ____. y=A'+B' A. NOR gate B. NAND gate C. XNOR gate D. None of the above
B. NAND gate
The following ladder logic diagram is for a(n) ____. I:1/0 (in parallel with I:1/1) -> O:2/0 A. OR gate B. NOR gate C. AND gate D. NAND gate
B. NOR gate
The following symbol displayed is for a(n) ____. A. OR gate B. NOR gate C. AND gate D. None of the above.
B. NOR gate
Are SYS 0 and SYS 2 files considered programmable? A. Yes. B. No. C. It depends on the hardware. D. They can only be used for subroutine files.
B. No.
The ____ instruction turns on a bit or an output port. A. XIO B. OTE C. OTL D. OSR
B. OTE
A. Option A B. Option B C. Option C D. Option D E. Option E F. Option F XNOR
B. Option B
Holds the output bit status of the output modules
B. Output
In the RLD diagram shown, the motor turns on if ____. A. SW1 and SW2 are closed B. SW1 and LS are closed C. SW2 is closed and PB is pressed D. All of the above.
B. SW1 and LS are closed
You can only place one output device per rung; therefore, you cannot place any output devices in ____. A. parallel B. series C. junction D. None of the above.
B. Series
In the PLC logic circuit shown, which slots are for discrete input modules, and which are for discrete output modules? A. Slots 1, 3, and 5 are for the input modules, while Slots 2, 4, and 6 are for the output modules. B. Slots 1, 3, 5, and 7 are for the input modules, while Slots 2, 4, 6, and 8 are for the output modules. C. Slots 1 and 3 are for the input modules, while Slots 2 and 4 are for the output modules. D. Slots 5, 6, 7, and 8 are not for discrete I/O modules.
B. Slots 1, 3, 5, and 7 are for the input modules, while Slots 2, 4, 6, and 8 are for the output modules.
The following expression is for a(n) ____. y=AB'+A'B A. XNOR gate B. XOR gate C. NOR gate D. None of the above.
B. XOR gate
The following truth table is for a(n) ____. A B Y 0 0 0 0 1 1 1 0 1 1 1 0 A. XNOR gate B. XOR gate C. NOR gate D. NAND gate
B. XOR gate
In the following relay logic diagram, ____. A. closing the stop switch will turn on the red light and the motor B. closing the stop switch and the pressure pushbutton will start the motor, turn on the red light, and turn off the green light C. closing the stop switch and pressure the pushbutton will start the motor and turn on the red light D. opening the stop switch while the motor is running will turn off the motor and turn on the red light
B. closing the stop switch and the pressure pushbutton will start the motor, turn on the red light, and turn off the green light
A motor can operate in continuous run mode or in temporary run mode, also called ____ mode. A. run B. jog C. skip D. stall
B. jog
One scan cycle of a PLC consists of the following sections: A. immediate input with mask (IIM) and immediate output with mask (IOM) B. program scan, output scan, input scan C. examine if closed (XIC) and examine if open (XIO) D. None of the above.
B. program scan, output scan, input scan
When using Rockwell Automation's RSLogix 500 software to create a new PLC file, the first step is to ____. A. select the PLC rack size B. select the PLC processor type C. select the file name D. select the I/O modules
B. select the PLC processor type
To convert a relay logic diagram to a ladder logic diagram, programmers follow ____ standard rules. A. five B. six C. seven D. nine
B. six
The following relay logic diagram is for a(n) ____. SW1 -> SW1 -> GLT A. OR gate B. NOR gate C. AND gate D. NAND gate
C. AND gate
The following symbol displayed is for a(n) ____. A. OR gate B. NOR gate C. AND gate D. None of the above.
C. AND gate
Which of the following statements is false? A. Current in an RLD flows from rail L1 to rail L2. B. Current on a rung in an RLD can flow through two switches connected in series. C. Current on a rung in an RLD can flow through two motors connected in series. D. Current on a rung in an RLD can flow through three solenoids connected in parallel.
C. Current on a rung in an RLD can flow through two motors connected in series.
For RSLogix 500 software, the main files are ____, and the subroutine files are ____. A. LAD2; LAD3 through LAD256 B. LAD1; LAD2 through LAD255 C. LAD2; LAD3 through LAD255 D. LAD0; LAD1 through LAD255
C. LAD2; LAD3 through LAD255
The following expression is for a(n) ____. y=A'B' A. XNOR gate B. XOR gate C. NOR gate D. None of the above.
C. NOR gate
The address for the port labeled in the following image is ____. A. O: 1 B. O: 1/0 C. O: 0/1 D. None of the above.
C. O: 0/1
The output port addresses in the image are ____. A. O: 1/0 through 0: 1/7 B. O: 1/1 through 0: 1/7 C. O: 0/1 through 0: 0/7 D. O: 1/0 through 0: 0/7
C. O: 0/1 through 0: 0/7
The address for the port labeled in the following image is ____. A. O: 2/1 B. O: 1/0 C. O: 2/0 D. O: 2/2
C. O: 2/0
A. Option A B. Option B C. Option C D. Option D E. Option E F. Option F OR
C. Option C
Holds the flag or status bits of the ladder logic diagram
C. Status
Which of the following statements is false? A. The input device can be the first on a rung in an RLD. B. Current in an RLD flows from left to right. C. The output device can be in the middle of a rung in an RLD. D. The output device is the last device on a rung in an RLD.
C. The output device can be in the middle of a rung in an RLD.
The following expression is used for a(n) ____. y=AB+A'B' A. NOR gate B. NAND gate C. XNOR gate D. None of the above.
C. XNOR gate
PLC channel configuration is used for ____. A. selecting an input B. selecting an output C. network communication D. selecting a PLC's CPU type
C. network communication
In a relay logic diagram (RLD), the following symbol is used for a ____. A. pressure switch B. flow switch C. proximity switch D. limit switch
C. proximity switch
In a relay logic diagram (RLD), the following symbol is used for a ____. A. resistor heater B. motor C. solenoid D. limit switch
C. solenoid
In the RLD diagram shown, the voltage level between lines L1 and L2 can be ____. A. 12 VDC B. 24 VDC C. 120 VAC D. All of the above.
D. All of the above.
The following relay logic diagram is for a(n) ____. SW1 in parallel with SW2 -> GLT A. OR gate B. NOR gate C. AND gate D. NAND gate
D. NAND gate
The following symbol displayed is for a(n) ____. A. XOR gate B. XNOR gate C. NOR gate D. NAND gate
D. NAND gate
The following truth table is for a(n) ____. A B Y 0 0 1 0 1 0 1 0 0 1 1 0 A. NAND gate B. AND gate C. OR gate D. NOR gate
D. NOR gate
The following expression is used for a(n) ____. y = A • B A. NOR gate B. NAND gate C. XNOR gate D. None of the above.
D. None of the above.
The following symbol displayed is for a(n) ____. A. OR gate B. NOR gate C. AND gate D. None of the above.
D. None of the above.
A. Option A B. Option B C. Option C D. Option D E. Option E F. Option F NOR
D. Option D
Holds information related to the number of timers used in the ladder logic program
D. Timer
The Boolean expression for the following 4-input NAND gate is ____. A. y = A • B • C • D B. y = A+B+C+D C. y = (A)(B)(C)(D) D. Y=A'B'C'D'
D. Y=A'B'C'D'
In RSLogix 500 software, R6 registers are used as ____ registers. A. storage B. random C. number D. control
D. control
The Boolean expression for the following 3-input NOR gate is ____. A. y = A • B • C B. y = (A)(B)(C) C. y = A+B+C D. y = (A+B+C)'
D. y = (A+B+C)'
Holds information related to counters and can have any address from C5:0 to C5:255
E. Counter
A. Option A B. Option B C. Option C D. Option D E. Option E F. Option F XOR
E. Option E
According to rule nine, the location of each contact associated with a coil can be recorded by the left-hand rail near the coil.
F
All the input and output devices must be placed vertically.
F
All three inputs to a three-input AND gate must be low to produce a high output.
F
Both inputs to a NAND gate must be high to produce a high output.
F
Both inputs to a NOR gate must be high to produce a high output.
F
Both inputs to an XOR gate must be high to produce a high output.
F
Industrial control systems often dictate that an input device must turn on when a pushbutton is pressed.
F
Input devices are placed near the right corner of the rung.
F
Output devices can be connected in series.
F
Holds 256 words (R6:0 to R6:255) that are used as control registers for advanced PLC instructions such as bit shift and sequencer instructions
F. Control
A. Option A B. Option B C. Option C D. Option D E. Option E F. Option F NOT
F. Option F
Holds 256 words (N7:0 to N7:255) that can be used as temporary storage registers
G. Integer
Registers are used by advanced PLC instructions such as bit shift and sequencer instructions
H. Bit
The ______________________________ report displays the number of slots available on the PLC.
I/O configuration
The main ladder logic diagram is held in ______________________________.
LAD2
The ______________________________ is used to program the programmable logic controller (PLC).
LLD
Both inputs to an AND gate must be high to produce a high output.
T
Both inputs to an XNOR gate must be low to produce a high output.
T
Current in the relay logic diagram must flow from left to right.
T
Each output device can only be represented once in a relay logic diagram.
T
Input devices can be represented multiple times in a relay logic diagram.
T
Inverting a NAND gate will result in creating an AND gate.
T
Inverting an OR gate will result in creating a NOR gate.
T
Only one input to an OR gate must be high to produce a high output.
T
Placing a PLC in online monitor mode allows you to see the operation of a running PLC control system on the computer screen.
T
When a rung is scanned during a PLC scan cycle, its input and output addresses are updated.
T
You can only place one output device per rung, so you cannot place any output devices in series.
T
You can place as many input devices as desired in series or in parallel in one rung in a relay logic diagram.
T
You can place two or more input instructions in series in a PLC ladder logic rung.
T
You can place two or more output instructions in parallel in a PLC ladder logic rung.
T
In a one-rung NOR gate ladder logic diagram, both inputs must be normally ______________________________.
closed
An Allen-Bradley SLC 500 series PLC has ______________________________ addressed from to C5:0 to C5:255.
counters
In a relay logic diagram, ______________________________ must flow from left to right.
current
The ______________________________ section of the report option in the dialog box has the options of Address/Symbols, Instruction Comments, and Symbol Groups.
database
XIC is an acronym for ______________________________.
examine if closed
XIO is an acronym for ______________________________.
examine if open
A method of testing the PLC system without actually closing or opening input devices is to test the PLC in the ______________________________ mode.
force
According to rule six for creating relay logic diagrams, all the input and output devices must be placed ______________________________.
horizontally
An Allen-Bradley SLC 500 series PLC has ______________________________ registers with addresses from N7:0 to N7:255.
integer
In a NOR gate ladder logic diagram, when one input is closed and the other one is open, the output is ______________________________.
off
In an XNOR gate ladder logic diagram, when one input is closed and the other one is open, the output is ______________________________.
off
In order to create the program, the PLC must be in ______________________________ mode.
offline
In an XNOR gate ladder logic diagram, when both inputs are open, the output is ___________________________________.
on
The ______________________________ scan rate is the time required to execute the PLC ladder diagram once.
operational
Inverting a NOR gate will result in creating a(n) ______________________________ gate.
or
Rule number two for creating relay logic diagrams states that one (and only one) ______________________________ is placed near the right corner of the rung.
output
In a one-rung NAND gate ladder logic diagram, the inputs must be in ______________________________.
parallel
A(n) ______________________________ logic diagram is created to show the logical relationship between devices.
relay
The ______________________________ dialog box is divided up into the sections labeled General, Data Files, Program Files, Special, Database, and Miscellaneous Layout Options.
report options
______________________________ are placed on the top of each rung and describe the function of the following rungs.
rung comments
PLC program execution, or program ______________________________, flows from left to right on each rung, starting from the top rung and continuing to the bottom rung.
scan
According to rule number four for creating relay logic diagrams, output devices cannot be connected in ______________________________.
series
In a one branch of XNOR gate ladder logic diagram, the normally closed inputs are connected in ______________________________.
series
File numbers SYS0 and SYS1 are ______________________________ files.
system
An Allen-Bradley SLC 500 series PLCs have ______________________________ addressed from T4:0 to T4:255.
timers
