When creating relay logic and ladder diagrams, it's important to adhere to certain conventions, such as numbering devices and connections in a circuit according to a standard or custom scheme.

It uses standard symbols for logic gates, wires, switches, power sources and other elements. A circuit diagram can help you visualize, analyze and design a circuit.

Scope: This Standard sets forth principles governing the formation of graphical symbols for logic diagrams in which connections between symbols are generally shown with lines. Definitions of logic ...