DL305 Data Communications Unit and FA-UNICON Universal Converter Manual

This document describes the DL305 Data Communications Unit (DCU), a general-purpose communications interface for the DL305 PLC family, detailing its two operating modes: as a general-purpose port (RS232C) and as a DirectNET network interface (RS422). It also covers the FA-UNICON Universal Converter, which converts RS422 signals from the D3-422-DCU to RS232C for PC connection, along with specifications, wiring, and compatibility information.