Siemens Level 1 Exam (Latest 2026/ 2027 Update)
| verified 200 Questions & Answers | Grade A | 100%
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2026/2027 |
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GRADED A+ | 100% VERIFIED
Question:
Project __________ is the term for the comments placed in the program to describe the function/operation of a
program block, its networks, instructions, and/or addresses.
Answer
documentation
Question:
A PLC time-driven sequencing program can be designed by using a series of timer instructions with each instruction
controlling a(n) __________ in the sequence.
Answer
event
Question:
The Siemens S7-1200 __________ instruction increases its Count Value (CV) by one each time the Count Up (CU)
input is turned on and decreases its CV by one each time the Count Down (CD) input is turned on.
Answer
Count Up Down (CTUD)
Question:
PLC seal-in logic works by using an N.O. contact instruction that is connected in __________ with the instruction
which turns on the output.
Answer
parallel
Question:
Most automatic machines are designed with more than one type of __________ function.
Answer
stop
Question:
Siemens S7-1200 projects are developed using four types of blocks: Organizational blocks, Functions, Function Blocks,
and __________.
Answer
data blocks
Question:
A processor encountering a(n) __________ JMP instruction interrupts normal, linear, program execution by
jumping to the LABEL instruction specified, continuing logic execution from that point.
Answer
True
Question:
Startup organization blocks execute once when the PLC transitions from __________, or when recovering from loss
of power.
Answer
Stop to Run mode
Question:
The Move instruction's IN field can contain either a constant of a data address from which the instruction
__________ a value.
Answer
reads
Question:
Move instructions are a type of PLC instruction that can __________ a value or a copy of the contents of one
memory location to another memory location.
Answer
transfer
Question:
The __________ instruction's IN1 input defines the constant or memory address that is to be divided by IN2.
Answer
DIV
Question:
When energized, the Siemens SUB instruction subtracts the value of the constant or memory location defined at IN2
from the value of the constant or memory location defined at IN1 and outputs the difference to a(n) __________
memory location.
Answer
User-defined
Question:
To associate HMI screen elements with data in the PLC
Answer
HMI tags are associated with data blocks
Question:
Which of the following is not needed in HMI programming?
Answer
Animated Buttons
Question:
Data is exchanged between the PLC and the HMI via _______.
Answer
Tags
Question:
A WinCC Basic __________ is a user-developed software program that is run on an HMI panel.
Answer
Project
Question:
The most common standard pneumatic signals produced by sensors are
Answer
3-15psi
Question:
What is the rate at which a signal repeats itself?
Answer
Frequency
Question:
Which of the following is NOT analog in nature.
Answer
A Light switching on or off
Question:
When a relay contact is _______, it passes current.
Answer
closed
Question:
Identify the logic gate shown below.
Answer
Exclusive-OR gate
Question:
Identify the logic gate shown below.
Answer
not gate inverter
Question:
The number of binary combinations of 1s and 0s that can be placed into the input section of the truth table for a
combination logic circuit with 6 inputs is ________.
Answer
64
Question:
Determine the decimal equivalent value for the 8 bit binary number 00010110
Answer
+22
Question:
Solve the binary addition shown below.
Answer
1000
Question:
Only one input to an OR gate must be 1 to produce a 1 output.
Answer
qTrue
Question:
The basic rule for an XOR function is:
Answer
if one or the other, but not both, inputs are 1, the output is 1.
Question:
A PLC operates by continuously examining the conditions of its input terminals, making decisions based on the ladder
logic program, and then updating the condition of its __________ terminals.
Answer
output
Question:
The term field devices refers to:
Answer
All devices that are physically wired to the PLC.
Question:
What is the term used for the type of input a thermocouple would provide.
Answer
analog
Question:
The __________ software is used to compile and download a project to an S7-1200 processor.
Answer
TIA Portal
Question:
What is the term used for the type of input a pushbutton would provide.
Answer
digital
Question:
The two basic types of input instructions used by the S7-1200 are the __________ instruction, and the Normally
Closed Contact instructions.
Answer
Normally Open Contact (N.O.)
Question:
__________ are often used to examine input and output status for troubleshooting field devices, program logic, or
the PLC.
Answer
Watch tables
Question:
The five numbering systems commonly used by PLCs are: __________, decimal, binary, octal, and binary coded
decimal.
Answer
hexadecimal
Question:
If the status indicator for a Function or Organization Block is indicated as a "Green Circle".
Answer
The online and offline version of the object are identical.
Question:
One of the advantages of a PLC is that it permits many instructions to be controlled by one __________ and it
doesn't matter how many of these are Normally Open Contact or Normally Closed Contact instructions.
Answer
input
Question:
The output module connects to:
Answer
Sensing devices such as switches or pushbuttons.
Question:
By replacing mechanical components with a PLC, the __________ of a process becomes faster, cheaper, and more
efficient.
Answer
control
Question:
The output module connects to:
Answer
Load devices such as lamps or solenoids.
Question:
Ethernet TCP/IP uses several __________ to convert data from its native format, such as a text message, into a
format that can be sent and tracked from the source node to the destination node on the network.
Answer
protocols
Question:
___ is the preferred enterprise level network because of its high speed and standardized hardware and software
Answer
Ethernet
Question:
For the PLC and PC to communicate, they must be connected to the same Profinet network and be configured with
compatible __________.
Group of answer choices
Answer
IP addresses
Question:
The internal memory area that stores the status values of outputs is:
Question:
What does the first numerical value of the PLC address I0.0 represent
Answer
Group of answer choices
Question:
The __________ is used to configure and program PLC and HMI projects.
Answer
portal view
Question:
What is the term used for the type of input a pushbutton would provide.
Answer
digital
Question:
The __________ is used to configure and program PLC and HMI projects.
Question:
Programmable Logic Controllers (also called PLCs) are __________.
Question:
PLCs, robots, drives) and other devices (i.e. PCs in other departments) within a manufacturing facility.
Answer
exchange
The output module connects to:
Basically the function of a PLC is to:
Answer
Make logical decisions and provide outputs
Which of the following statements is most true about the following basic Seal In logic?
Answer
The Forward Motor will not stay on once the Start_PB is let go.
A variable speed drive (VSD) can be controlled by a(n) __________ using discrete I/O.
Answer
PLC
The basic concept of a(n) __________ interlock is to prevent some event from happening unless certain conditions
are present that indicate it is safe to do so.
Answer
Safety
A PLC output diagram shows the control of an electric motor, whether it is direct or indirect, by the same symbol: a
__________ with the label M1, M2, etc.
Answer
circle
Two applications in which interlocks are used are: __________, and safety.
Answer
Sequencing
The Siemens S7-1200 Count Down (CTD) instruction decreases its Count Value (CV) by one each time its
__________ input is turned on.
Answer
Count Down (CD)
PLC programs can use __________ as well as limit switches to sequence events.
Answer
timers
What is true about the following PLC program?
Answer
The Timer is storing information in Data Block 1
Which of the following bits in this Data Block are used in a CTD command? (Select all that applied)
Answer
CD LD QD
Which is not a Timer that can be used in Siemens programming platform?
Answer
TOR
Which statement is most likely true about the below program?
Answer
Out_5 stays on as long as Sensor_5 is high
Most __________ machines perform a number of actions to accomplish the task for which they have been designed.
Answer
Automatic
An example of a PLC program that performs an event-driven sequence is a __________ program.
Answer
reciprocating hydraulic actuator
What is one application of the circuit below?
Answer
To "Seal-in" a outpu
In the program below, which statement is most correct?
Answer
The pump will be on to make sure the tank's level will remain between the two sensors.
Of the pictured program blocks, which doesn't contain any programming logic?
Answer
DB1
Startup organization blocks execute once when the PLC transitions from __________, or when recovering from loss
of power.
Answer
Stop to Run mode
The LABEL instruction defines the program __________ the processor will jump to when it encounters an energized
JMP or JMPN instruction with the same address.
Answer
Destination
Functions are created by expanding the project's Program blocks folder and double-clicking the __________ object
to display the software's Add new block window.
Answer
Add new block
What is most likely being called below?
Answer
FBs Function Blocks
Move instructions are a type of PLC instruction that can __________ a value or a copy of the contents of one
memory location to another memory location.
Answer
transfer
When entering math instructions, users must assign a(n) __________ to each instruction that defines the length and
format of the instruction's parameters.
Answer
data type
The Move instruction's IN field can contain either a constant of a data address from which the instruction
__________ a value.
Answer
reads
What below needs to be defined in order for this command to work?
Answer
Numbers for inputs, Tag for Output and Data type of process
The __________ instruction's IN1 input defines the constant or memory address that is to be divided by IN2.
Answer
DIV
New project __________ can be added to existing projects or created when the project is first developed.
Answer
screens
Which of the following is not needed in HMI programming?
Answer
Animated Buttons
Screen selector objects are __________ button objects used to navigate between the screens of an HMI project.
Answer
static
A WinCC Basic __________ is a user-developed software program that is run on an HMI panel.
Answer
Project
To associate HMI screen elements with data in the PLC
Answer
HMI Tags are associated with PLC Tags
Identify the below shown electronic signal
Answer
Digital
Which of the following would most likely to be considered an "active low"?
Answer
Emergency Stop
How many 1s and 0s are grouped together in a 16-bit word?
Answer
16
____________ readings of a thermocouple are taken to determine temperature measurements.
Answer
Voltage
The logic signals throughout a combination logic circuit should be traced from the ________.
Answer
inputs to the outputs
Identify the gate that matches the boolean equation below. Q = A ∙ B ∙ C
Answer
AND gate
Identify the gate that matches the boolean equation below. . X=A+B+C
Answer
Answer
OR gate
Identify the logic gate shown below.
OR gate
Identify the logic gate shown below.
Answer
Answer
AND gate
Convert the binary number 1110 to its decimal equivalent.
14
In a binary number, the third colum to the left of the reference point represents the positional value of _________.
1
4
What is the decimal conversion of the binary number 11011001?
217
Convert the BCD number 1001 0111 to its decimal equivilant.
97
What is the hexadecimal conversion of the decimal number 224?
E0
What would Q be if A=1 and B= 1?
1
The logic symbol drawn is that of the:
AND function.
A two input OR function, expressed as a Boolean equation, would be Y= AB.
False
What would Q be if A=1 and B=0?
0
What would Q be if A=0 and B=1?
0
After a project has been __________ to a PLC, it is ready to run.
downloaded
What does the second numerical value of the PLC address Q3.6 represent
bit
__________ inputs are a type of input that recognizes only two conditions: on or off.
discrete
Solenoids, relay coils, and indicator lamps would be considered:
digital outputs
What is the term used for the type of input a thermocouple would provide.
analog
The basic operation of PLC ladder logic is very similar to hard-wired logic. The three main similarities are: logic
continuity, six logic elements, and
parallel network operation
__________ are often used to examine input and output status for troubleshooting field devices, program logic, or
the PLC.
Watch tables
What type of Programming Language is pictured here?
FBD
Which is most likely the correct address for the following pictured item?
None of these answers are right
The I/O diagram always identifies each output terminal with a __________ drawn around its address.
Diamond
Which of the following are the interface between the operating system and the user program?
Organizational blocks (OBs)
Examine the rungs below and determine whether the output for each is on or off. The input conditions shown
represent the states of real-world inputs.
Off
The program editor is TIA portal's integrated programming utility for developing program functions, function blocks,
and __________.
Organization Blocks
If the status indicator for a Function or Organization Block is indicated as a "Green Circle".
The online and offline version of the object are identical.
Examine the rungs below and determine whether the output for each is on or off. The input conditions shown
represent the states of real-world inputs.
on
Keyboard __________ are the editing commands that are executed by pressing a single key, or two or more keys
simultaneously.
shortcuts
Google