Siemens 6GK1102-4AA00 Digital Input Module 24VDC

Siemens 6GK1102-4AA00 is a SIMATIC NET Optical Link Module (OLM) that provides a fiber-optic interface for Industrial Ethernet networks, enabling data transmission between network segments with optical isolation. Part of the Siemens SIMATIC NET lineup, the OLM bridges components such as PLCs, controllers, and remote I/O over fiber, helping to extend network reach while preserving signal integrity in demanding industrial environments. This module is listed under the part number 6GK1102-4AA00 and is also cataloged as 6GK11024AA00, reflecting its role within Siemens' industrial networking family. Typical applications include connecting distributed automation nodes across a plant floor, linking master CPUs to remote I/O via fiber, and creating a robust, electrically isolated link in industrial Ethernet configurations. The OLM is designed to integrate with compatible SIMATIC NET hardware and backplane/rack configurations commonly used in Siemens automation architectures; exact mounting, interface options, and compatibility details are specified in Siemens SIMATIC NET documentation for this model.