They are designed to work in harsh industrial environments
What is a PLC
100
The address for bit 10 in word 5 for the SLC 500 is _____.
A. B:3.5/10
B. B3:10/5
C. BIT:3.10/5
D. B3:5/10
What is B3:5/10
100
It is the mnemonic for the instruction that raises a number to a power
What is XPY
100
Its acronym in an Allen Bradley PLC is MCR
What is Master Control Reset
100
This is a logical operator that permits a register to move its contents to the right or the left
What is a BSL (Bit Shift Left) or BSR (Bit Shift Right)
200
Which of the following is NOT normally present on both PLCs and PCs?
A. Processor
B. Input Modules
C. Solid State Memory
D. Motherboard
What is the Input Modules
200
Which one of the following files is not a file structure used by the SLC 500?
A. Sequencer (file 2).
B. Output (file 0).
C. Input (file 1).
D. Bit (file 3).
What is Sequencer (file 2)
200
In the Allen-Bradley PLC-5 and SLC-500 systems, where is the floating point file located? Name of the file
What is F8
200
This area is formed by two MCR instructions in the program, and it is often called...
What is a fence
200
This function is commonly used for tracking parts on a conveyor so that specific parts can be removed from it, if they are not to specifications.
What is BSL (Bit Shift Left)
300
Which of the following is moved toward the relay electromagnet when the relay is on?
A. Armature.
B. NO contact.
C. Coil.
D. NC contact.
What is the Armature
300
The OTL (-(L)-) and OTU (-(U)-) output instructions are...
A. not able to be used with an internal relay bit address
B. assigned the (-( )-) output symbol
C. a retentive type output
D. required to use different but adjacent output address bits
What is a retentive type output
300
What instruction would you use to ensure that the math or move instruction is only active for one scan?
What is a One Shot Rising (OSR)
300
It is the instruction that accompanies the jump instructions (JMP)
What is the Label instruction (LBL)
300
FFL and FFU functions allow to load or unload data into a file, usually called stack, and combined perform the functions of a ....
What is FIFO (First In, First Out) function
400
On an SLC-500 PLC, the ________ is used to deliver power and signals to the I/O modules.
A. rack rails
B. power rails
C. module interconnect
D. backplane
What is the backplane
400
Which of the following parameters is not used by the SLC 500 timer instructions?
A. Preset value.
B. Trigger voltage.
C. Time base.
D. Timer number.
What is Trigger Voltage
400
It is the largest number that can be entered into a math function in a SLC-500 PLC CPU 5/02 and avoid overflowing the stack
What is 65535
400
These are the functions needed for calling a subroutine
What are JSR, SBR and RET
400
This function allows the PLC to control processes with many steps and multiple outputs, facilitating the development of ladder logic.
What is SQO (Sequencer Output) function
500
A switch pole is the ________ moved by the switching mechanism.
A. external contact
B. internal conductor
C. external conductor
D. internal contact
What is the internal conductor
500
A TOF timer rung is false and the ACC value is less than the PRE value, so ________ timer bits are true.
A. both the EN and TT
B. only the DN
C. both the TT and DN
D. only the TT
What is C. both the TT and the DN bits
500
What is the type of error produced by a division by zero in a SLC-500 system?
A. Major Error
B. Is ignored
C. Minor Error
D. PLC stops
What is Minor Error
500
It is the state of retentive outputs in the fence when the MCR is de-energized
What is remain in last state
500
These are traditional inputs to a sequencer function, so that the machine moves through a series of steps.