PLC Flashcards
Which of these values placed in source A will cause M1 to turn on when PB1 is pressed
momentarily?
9 or subtract 2 numbers
Which sentence file connects PLC Program logic to graphics text, and function keys?
PLC Project
What are software programs called that allow a device to connect to a network and
communicate with other devices?
Drivers
A PLC and a PC are connected M this type of network if a single ethernet cable is used to
connect their Ethernet parts?
IP addresses are made different
Which type of instruction operates just like an output, except that it does not directly
control a PLC output?
Output instructions with relative address
What step do PLC Scan cycles perform after checking the status of inputs and solving
program logic?
Turn outputs on or off
What is the value contained in the RESULTS tag?
6
What type of instructions are used to make decisions and control operations based on
the values of data in the PLC program?
Comparison instructions
In which mode does a programmable controller scan the ladder logic program and set
output on or off?
RUN
In the logic diagram what input conditions will cause M1 to turn on?
True or False
Where does the application file reside, which contains the screens and screen objects
displayed to the operator at the HMI terminal?
HMI Memory
What does an operator interact w. On an HMI panel to monitor process and make
adjustments to keep the process running?
Object
What device is used to configure an HMI’s panel IP Address?
USB
- What is the next step to enter ladder logic after the program’s editor has been opened
and an empty rung is in its place?
Add Instruction
What file defines the address of discrete input modules input terminals?
I/O or device configuration file in this model
- In this model, what is the status of motors M1 and M2 if PB1 and PB3 are pressed?
M1 on, M2 on
- Pressing the E-stop button on a PLC’ master control relay circuit causes power to be
removed from what components?
Output Module
If a controller has no configured IP address, what type of connection can be used to
configure the controllers IP?
USB
What function do the NC contact instructions serve that are identified in the reversing
motor control program shown?
Interlock
- Which of the following is a quick method to verify that the programmable controller
itself is operating correctly?
RUN Solid Green Light
If a 24vdc PLC input module uses sinking- type (active high) inputs, what applied voltage
level would cause the input to turn on?
+24V
What software configuration element identifies the actual physical location of a input
terminal of a PLC input module?
The absolute address
What function does SS1 enable in this program when in the left position?
Jog Mode
- What is the valve in the destination file integer 0 if pb1 is pressed 4 and PB3 3 times?
12 or 0 (Apparently Amatrol hasn’t fix this answer) or 21 because PB4 is never pressed
What device is used to configure an HMI’s panel IP Address?
MHI Onboard Software
What term is used to describe these functions in PLC programming: adding and
removing instruction, changing logic or changing addresses?
Edit
What network configuration settings must be configured correctly to enable
communication between PLC and PC?
Point to Point
Which IP Address? Question related with IPs Addresses (Remember the last digits after the
dots has to follow a sequence)
192.–. 15
What is a collection of files that includes a PIC ladder logic program, hardware
configurations and other settings?
Project
Which of these wiring connections are required to wire a limit switch to input 3 of the
sinking input modules?
C to A, B to G and H to D (CABGHD)
What is each group of digits called?
Octet
What is the common method of interfacing a motor to a PLC output?
Motor Contactor
What are steps 1 and 2 of the sequence?
Cylinder 2 extends then cylinder 1 extends
What PLC program is used for complex math formulas?
Compute (CPT)
What is the trigger for a time driven sequencing process to move to the next?
Done Bit
What number line is used to connect the solenoid to the output terminal?
4 or closest to diamond
Pump 1 and the mixer motor 15 secs after P1 has been momentarily pushed and the
time base for the timer is 1 seconds?
Pump on/ motor off
What is the trigger (input device) for a timer driven sequencing process to move to the next
step in the sequence?
Limit Switch
This kind of software automatically is used when a software is unnecessary for connection?
USB
Communication between two machines is called?
A handshake
What can a PLC not do?
It cannot drive a CNC machine
In a six-step process when troubleshooting if you go to 6 step what is your next step after?
None, you are done
Which of the following input conditions will output M1 turn on
PB1 False, PB2 True, PB3 False (FTF)
Which of the following instruction types operates just like instruction, except that it does not directly
control a PLC Output?
Output instruction with memory bit address
Which of the following files defines the addresses of a discrete input module’s input terminal Which
file are the inputs and outputs located?
I/O File device configuration file
What function do reverse and forward contact instructions serve are identified in the reversing
motor control program shown?
Interlock
Which of the following of the following elements the actual physical location of an input terminal on
a plc input module
Absolute Address label
Which of the following configuration setting must be configured correctly to enable communication
between a PLC and a PC?
IP Address and Subnet
Which of the following memory is arranged to store 32-bit words?
DINTs
What is the output of a comparison instruction?
True or false output
The IP Addresses of a PC-PLC point-to-point connection will be
Different IP Addresses
Which of the following timer bits triggers driven sequence process to move to the next step in the sequence?
Timer DN Done bit
Which of the following math commands is used to solve complex math formulas?
Compute (CPT)
What PLC program instruction is used to make decision and control operations based on the values
of data in the program?
Comparison
Similar question but different values (FIND THE LOGIC)
8
A JMP instruction must always be used with a(n)
_____ instruction.
LBL
On a modular-type PLC, which of these methods is NOT a way to determine the on/off status of a
sensor input?
View input indicator on processor module
Which outputs in this program will be on?
Output 2
