PLC Programming Instructions Quiz

What is the primary difference between a hardwired motor control application and a PLC motor control application?

• Hardwired uses symbols, PLC uses instructions

• Both use symbols

• Both use instructions

• Hardwired uses instructions, PLC uses symbols

How many program files are possible in a PLC's memory?

• 512

• 256

• 1024

• 128

What is the memory requirement for a high-density IO module?

• One word of memory

• Two words of memory

• Four words of memory

• Eight words of memory

Which type of input instruction is used with a normally closed input device?

• OTU

• XIC

• XIO

• OTL

What is the function of an OTL instruction in a PLC program?

• Turn a bit off

• Reset a bit

• Turn a bit on

• Toggle a bit