TAC I/NET 7718 Process Control Unit Manual

This document details the TAC I/NET 7718 Process Control Unit (PCU), a monolithic LAN-based controller for direct digital control and monitoring of process functions in commercial, institutional, and industrial applications. It describes the unit's features, including universal I/O, adaptive PID algorithms, peer-to-peer token passing LAN, downloadable firmware, and extensive control functions such as environmental control, energy management, and demand limiting.