Interaction of Hardware and Software Flashcards
1
Q
What are the three basic sections of the PLC?
A
- Input section
- CPU sections
- Output section
2
Q
Inputs wired to the input module control the ___________________
A
input image table
3
Q
If the device is on, the corresponding input in the input image table will be set to ___
A
1
4
Q
What are the three basic operations that the CPU section of the PLC performs?
A
- Reads the inputs
- Solve the logic program
- Write to the outputs
5
Q
The location of a specific input or output field device is identified by the processor by means of its ___________
A
address
6
Q
When will the output instruction in a rung become true?
A
When a path of true instructions exists between the logic rail and the output instructions
7
Q
In a PLC system there is a physical connection between the field input devices and the output devices. True or False?
A
False
