Seven basic **tools used in Distributed Control System** (DCS) for proper operation and root-cause analysis to troubleshoot the problems.

# 7 basics tools used in Distributed Control System

**Cause-and-effect diagram** (also called Ishikawa or fishbone chart): Identifies many possible causes for an effect or problem and sorts ideas into useful categories.

**Check sheet:** A structured, prepared form for collecting and analyzing data; a generic tool that can be adapted for a wide variety of purposes.

**Control charts:** Graphs used to study how a process changes over time.

**Histogram:** The most commonly used graph for showing frequency distributions, or how often each different value in a set of data occurs.

**Pareto chart:** Shows on a bar graph which factors are more significant.

**Scatter diagram:** Graphs pairs of numerical data, one variable on each axis, to look for a relationship.

**Flow chart:** A process flow chart is simply a tool that graphically shows the inputs, actions, and outputs of a given system.