Programmable Logic Controllers (PLC) Objective Questions
PLC Fill in the Blank Questions
- The most important sections of PLC are input sections, output sections and ------
- The Structure of PLC consists of power supply module, CPU, I/O modules and --------
- User program can be written in any standard PLC programming languages like statement list
and ------------------ - The AND function combines the bit addresses of inputs and produces an RLO ( Results of
logic operation) of … when all the inputs are scanned for 1 - The function of timer is to provide ------------------ between work operations
State True or False
- Hard wired control systems are used widely when production requirements change regularly
- Relay controls are less expensive compared to PLC controls
3 While processing a PLC program, CPU scans and executes the main program cyclically. - The NO and NC PLC program contact is same as the hardware NO and NC contacts.
- The OR function combines the bit addresses of inputs and produces an RLO ( Results of logic
operation) of 1 when any one or more of inputs are scanned for 1.
PLC Answers
Fill in the Blank Questions
- Program section
- Software
- Ladder diagram
- 1(one)
- delay
State True or False
- False
- False
- True
- False
- True