Allen-Bradley 1203-SG4 Communication Module 4-Port Expander

Allen-Bradley 1203-SG4 SCANport Expander is a 4-port communication expansion module that attaches to a 1203 Communications Module to increase SCANport connectivity from one to four ports. Catalog number 1203-SG4, this Rockwell Automation accessory is described as a one-to-four port expander for the 1203 SCANport family, enabling additional SCANport device connections in legacy drive configurations such as the 1336 PLUS line. By adding the 1203-SG4, users can expand SCANport topology to support more HIMs or other SCANport devices without replacing the base communications module. This expansion option sits within Rockwell's portfolio of 1203 communications modules and is commonly referenced in catalogs and literature as a four-port expansion solution.