Added Material SACA C-207 Questions with CORRECT
Answers (Grade A+)
Question 1:
An input signal that varies continuously, such as 0-10 V DC or 4-20 mA, representing a physical
measurement like temperature or pressure.
Answer:
Analog Input Signal
Question 2:
An output signal that provides a continuous value (0-10 V or 4-20 mA) to control field devices such as
VFDs or valves.
Answer:
Analog Output Signal
Question 3:
The smallest change in an analog signal that a PLC input module can detect, determined by its bit depth
(e.g., 12-bit = 4096 counts).
Answer:
Resolution
Question 4:
The integer value read by an analog input before scaling, typically ranging from 0-32 767 for 16-bit
modules.
Answer:
Raw Counts
Question 5:
The process of converting raw analog counts to meaningful engineering units such as psi or °C using
software.
Answer:
Scaling
, Question 6:
The real-world measurement values corresponding to scaled PLC data, such as °F or gallons per
minute.
Answer:
Engineering Units
Question 7:
A 32-bit floating-point data type used to store decimal values such as 23.45 or -9.81.
Answer:
REAL Data Type
Question 8:
A data type that stores alphanumeric text data such as "Motor Start" or "Error 01".
Answer:
STRING Data Type
Question 9:
A custom data structure created by the programmer to group related tags, such as Motor.Start,
Motor.Speed, and Motor.Status.
Answer:
User-Defined Data Type (UDT)
Question 10:
A tag that points to another existing tag, allowing alternate names for I/O or internal data.
Answer:
Alias Tag
Question 11:
A group of related tags that share the same name and data type, indexed numerically (e.g., Sensor[0] to
Sensor[9]).
Answer:
Array
Answers (Grade A+)
Question 1:
An input signal that varies continuously, such as 0-10 V DC or 4-20 mA, representing a physical
measurement like temperature or pressure.
Answer:
Analog Input Signal
Question 2:
An output signal that provides a continuous value (0-10 V or 4-20 mA) to control field devices such as
VFDs or valves.
Answer:
Analog Output Signal
Question 3:
The smallest change in an analog signal that a PLC input module can detect, determined by its bit depth
(e.g., 12-bit = 4096 counts).
Answer:
Resolution
Question 4:
The integer value read by an analog input before scaling, typically ranging from 0-32 767 for 16-bit
modules.
Answer:
Raw Counts
Question 5:
The process of converting raw analog counts to meaningful engineering units such as psi or °C using
software.
Answer:
Scaling
, Question 6:
The real-world measurement values corresponding to scaled PLC data, such as °F or gallons per
minute.
Answer:
Engineering Units
Question 7:
A 32-bit floating-point data type used to store decimal values such as 23.45 or -9.81.
Answer:
REAL Data Type
Question 8:
A data type that stores alphanumeric text data such as "Motor Start" or "Error 01".
Answer:
STRING Data Type
Question 9:
A custom data structure created by the programmer to group related tags, such as Motor.Start,
Motor.Speed, and Motor.Status.
Answer:
User-Defined Data Type (UDT)
Question 10:
A tag that points to another existing tag, allowing alternate names for I/O or internal data.
Answer:
Alias Tag
Question 11:
A group of related tags that share the same name and data type, indexed numerically (e.g., Sensor[0] to
Sensor[9]).
Answer:
Array
