Timers/Counters
HMI
Math Instructions
Functions/Function Blocks
SCL
100
Which parameter holds the output of the timer?
Q
100
What does HMI stand For?
Human Machine Interface
100
True or false: Math Instructions are only able to be done with REAL data types
True
100
What are the advantages of using functions over function blocks?
Keeps code more organized, breaks up big problems into smaller ones and keeps code DRY (Don't Repeat Yourself)
100
What does SCL stand for?
Structured Control Language
200
What bits are available for a down counter?
LD, CV, PV, Q and CD
200
Why do industrial machines typically need an HMI?
An HMI connects an operator to a machine, system or device.
200
What is the purpose of a Modulo (MOD) instruction?
A Modulo (MOD) instruction returns the remainder of a division.
200
What is a common application for function blocks?
Motor Control
200
Which symbol is used to end instruction in SCL?
;
300
Which timer does this timing diagram represent?
TON
300
What does SCADA stand for?
Supervisory Control and Data Acquisition
300
What would be the output of this LIMIT instruction?
2664.8
300
How do you create a function in TIA portal?
Select add new block, select function, name the function and then hit OK.
300
What does the := symbol represent in SCL?
Assignment operator
400
Which timer does this timing diagram represent?
TOF
400
What are some inputs on an HMI?
Knobs, sliders, and buttons
400
This instruction with 5 as its MIN and 10 as its MAX would function the same as the ladder logic shown:
IN RANGE
400
What is the purpose of a function in PLC programming?
Functions are used to execute a specific task within the main program. They work much like subroutines in Allen Bradley PLC programming.
400
What are some reasons to use comments in SCL?
Prevent a line of code from running (for testing purposes) without deleting it forever and leave a note to yourself or other programmers
500
Which timer does this timing diagram represent?
TONR
500
What are some recent innovations in the field of HMI design?
Remote access, integration with SCADA and IIoT/Smart Manufacturing.
500
Given the inputs to NORM_X shown below, calculate the output.
0.875 to 0.895 (any answer in this range will work)
500
What is a common application for functions?
Functions are ideal for operations where the result depends only on the current inputs and no memory (static variables) are needed.
500
"At Entry 1" is true and then false. If the code snippet below is the only code, what will be the value of "Conveyor 1" ?
IF "At entry 1" THEN
"Conveyor 1" := 1;
END_IF;
1