PLC and System Maintenance Quiz

Why is it important to document PLC maintenance?

• To reduce the cost of maintenance

• For future reference and compliance

• To increase the lifespan of the PLC

• To ensure the application runs faster

What is a crucial step before performing PLC hardware maintenance?

• Increasing the power supply

• Updating the software

• Applying lockout/tagout

• Replacing the CPU

Where can backup batteries for the CPU of a PLC typically be found?

• Behind the hinge door or cover of the CPU

• Inside the main power supply

• In the control panel

• Next to the RAM module

What is required to connect a PC to a PLC?

• An interface cable and sometimes an interface card

• A wireless router

• A USB flash drive

• A Bluetooth adapter

What is the purpose of EEPROM chips in PLCs?

• To improve network connectivity

• To store user data

• To provide a backup to RAM memory

• To enhance processing speed