Exam 15: Introduction to Programmable Control

The time required for the PLC to complete one scan (read inputs, solve logic, and update outputs) is called the scan time. A typical value for scan time is in the order of ____.

By definition, ____________________ devices are all devices outside the processor, including all hardware.

The input signal must be converted to a(n) ____ logic voltage for use in the processor.

In industrial applications where the PLC will replace the relay logic circuit, the operator controls and process switches will generally remain as they are wired.

Through a sophisticated system of digital signal transmission and reception, binary data can be organized in a structured format called a(n) ____.

The most common PLC programming language used in industry is called ____________________.

Volatile memory will lose its programmed contents if operating power is removed or lost.

The only devices in the decision maker category for the PLC system are the ___________________ that reside in the PLC logic program.

A PLC system offers many advantages over a relay-based control system except that it can be difficult to implement.

The compilation of all available instructions for a given PLC is called the ____.