PLC (Unit-1_Introduction & Overall look inside PLC)

PLC has replaced__________

• Transistor
• Computer
• Relay Logic
• Solenoid

Disadvantage of PLC is _________

• Security
• Documentation
• Fixed program application
• Pilot running

PLC stands for_______

• Programmable Ladder Controller
• Program Low Controller
• Programmable Logic Controller
• Programmable Logic Converter

If the I/O Count of PLC is between 32 to 128 then it is called as ___________.

• Micro PLCs
• Medium PLCs
• Small PLCs
• Large PLCs

Output modules are available in various switching and _______configurations.

• AC
• DC
• Relay
• Transistor

The devices connected to PLC for sending status information are called _______field devices.

• Programmer and monitoring
• Memory
• Output
• Input

Hand held terminals is an example for___________.

• CPU
• Input Module
• output Module
• Programmer and monitoring

In PLC the user program is stored in ________ memory.

• ROM
• PROM
• EPROM
• EEPROM

Input modules provide an interface between ______________and_____________.

• Input connections and the CPU
• Field equipment and the CPU
• Output modules and field devices
• The CPU and output modules

PLC I/O systems provides an interface between __________ and ___________.

• Input devices and the CPU
• Field equipment and the CPU
• Output modules and field devices
• Input modules and output modules