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Siemens Level 1 Exam V2 (Latest 2026/ 2027 Update)
| Questions & Answers | Grade A| 100% Correct (Verified
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2026/2027 | GRAD
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Memory Coil instructions look and operate just
like Assignment instructions, except they use an
memory address instead of an output address.
internal
N.O. and N.C. contact instructions can be controlled
by
instructions simply by giving the
contacts the address of the instruction.
Assignment
Which of the following statements is most true
about the following basic Seal In logic?
The NC Stop PB is programmed with the correct bit but is in the wrong
place.
PLC seal-in logic works by using an N.O.
contact instruction that is connected in with
the instruction which turns on the output.
parallel
What is the time base for a Siemens PLC? All of these are appropriate time bases
Days
Hours
Minutes
Seconds
Milliseconds
Which of the following bits in this Data Block are used
in a CTD command? (Select all that applied)
CD LD QD PD CV
The Siemens S7-1200 Count Up (CTU)
instruction increases its by one each time
its Count Up (CU) input is turned on.
Count Value (CV
What is true about the following PLC program? The Timer is storing information in Data Block 1
Which statement is most likely true about the below
program?
Out_5 will remain off if both sensors are high
An example of a PLC program that performs an
event- driven sequence is a program.
reciprocating hydraulic actuator
What is one application of the circuit below? To "Seal-in" a output
Which statement is most likely true about the below
program?
Motor_1 only turns on when Inp_2 changes from false to true
Most automatic machines are designed with
more than one type of function.
stop
Siemens S7-1200 projects are developed using four
types of blocks: Organizational blocks, Functions,
Function Blocks, and .
data blocks
What is most likely being called below? FBs
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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.
True
Startup organization blocks execute once when the
PLC transitions from , or when recovering from
loss of power.
Stop to Run mode
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. undefined
User-defined
To associate HMI screen elements with data in the PLC HMI Tags are associated with PLC Tags
Which of the following is not needed in HMI
programming?
Animated Buttons
Data is exchanged between the PLC and the HMI via
.
Tags
The most common standard pneumatic signals
produced by sensors are
3-15 psi
What is the rate at which a signal repeats itself? Frequency
Which of the following is NOT analog in nature. A Light switching on or off
Identify the logic gate shown below. Exclusive-OR gate
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 .
64
Determine the decimal equivalent value for the 8 bit
binary number 00010110
+22
Solve the binary addition shown below. 101+ 11 1101
Convert the hexadecimal number C7 to its decimal
equivalent.
199
Convert the binary number 1100 to its decimal
equivalent.
12
Since the signed binary number 0111 1111 1111 1111
represents a decimal equivalent value of +32,767,
the signed binary number of 1000 0000 0000
0000 represents a decimal value of . -32,768
What would Q be if A=1 and B=0? 0
Only one input to an OR gate must be 1 to produce
a 1 output.
The basic rule for an XOR function is:
True
if one or the other, but not both, inputs are 1, the output is 1.
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.
output
The term field devices refers to:
All devices that are physically wired to the PLC.
What is the term used for the type of input a
thermocouple would provide.
analog
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The software is used to compile
and download a project to an S7-1200
processor.
TIA Portal
What is the term used for the type of input a
pushbutton would provide.
digital
The two basic types of input instructions used by
the S7- 1200 are the instruction, and the
Normally Closed Contact instructions.
Normally Open Contact (N.O.)
are often used to examine input and
output status for troubleshooting field devices,
program logic, or the PLC.
Watch tables
The five numbering systems commonly used by PLCs
are:
, decimal, binary, octal, and binary
coded decimal.
hexadecimal
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.
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.
input
The Memory stores user programs as they
are downloaded to the processor.
Load
Which of the following is the plc model can be used on
the largest application.
S700 300/400
An S7 is a collection of all of the data
and programs needed to control a machine or
process.
project
PLC timer instructions are designed to perform the
same functions as the they replace: provide
control logic by opening and/or closing their
contacts after a predetermined amount of time
passes.
hard-wired timers
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.
Count Up Down (CTUD)
How many distinct voltage levels does a digital
signal have.
Two
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