Allen-Bradley 1203-GD2 Communication Module

Allen-Bradley 1203-GD2 Communication Module is a SCANport Serial Communications Module that provides a bridge between Allen-Bradley SCANport devices and standard serial networks. This DIN-rail mounted unit is powered from 85-264 VAC, 1-phase, at 45–63 Hz, allowing installation directly in typical control panel environments without a separate DC supply. It offers RS-232, RS-422, or RS-485 serial interfaces and supports point-to-point DF1-style communications used by AB equipment, making it well suited for linking PLC-5 family controllers with remote I/O or PC-based configuration stations via serial links. The 1203-GD2 is part of the Bulletin 1203 family and is commonly listed alongside related GD2, GK2, and GM2 variants; the device is designed to work with SCANport adapters and other 1203-series hardware to facilitate serial networking in industrial automation. Typical applications include connecting SCANport-driven devices to a computer for diagnostics or data exchange, and interconnecting a PLC with remote I/O devices or legacy equipment that communicates over RS-232/422/485.