PROGRAMMAMBLE LOGIC
CONTROLLER PRACTICE EXAM
2024
PLCs are special-purpose industrial computers designed
for use in the control of a wide variety of manufacturing
machines and systems. - CORRECT ANSW-Definition of
a programmable logic controller (PLC)?
True - CORRECT ANSW-The PLC program (software)
determines the process output changes based upon the
process input data (signals).
switches / sensors - CORRECT ANSW-Field device is a
general term for all input ? and ? and all output actuators.
input / output - CORRECT ANSW-The input and output
(I/O) modules condition the input and output field device
signals to match the processor's input and output
requirements; or in simpler terms, allow different types of ?
or ? signals.
power supply / modules - CORRECT ANSW-The
backplane connects the ? to the ? and provides a data bus
that allows the modules and the processor to exchange
input and output data and system status values.
I:3.0/4
Note: The address for the discrete input is I:3.0/4. The
letter I indicates an input address, and the 3 indicates that
the input module is in slot 3. The 0 indicates data is in
word 0. The 4 indicates the point or terminal connection
number for the field device input signal. - CORRECT
ANSW-For an AB PLC, select the address-based input
address for the discrete signal connected to point or
terminal 4 of the input module in slot 3.
The address for the discrete output is O:5.0/8. The letter O
indicates an output address, and the 5 indicates that the
output module is in slot 5. The 0 indicates data is in word
0. The 8 indicates the point or terminal connection number
for the field device output signal.
The correct answer is: O:5.0/8 - CORRECT ANSW-For an
AB PLC, select the address-based output address for a
discrete actuator connected to point or terminal 8 of the
output module in slot 5.
Truly - CORRECT ANSW-The PLC ladder logic rung is a
symbolic program stored in the processor memory; as a
result, no current flows in the ladder logic rung.
yep - CORRECT ANSW-In PLC ladder logic, input
instructions are graphical symbols for an actual field
device located in the field
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