Distributed PLC Systems: Fiber optic links connect remote I/O racks and edge devices to the main PLC CPU. Smart Factory Networks: Optical modules integrate PLCs with industrial Ethernet switches, HMIs, SCADA, and IIoT gateways. Fiber optics solves this fundamental problem because light signals are immune to electrical noise—no matter how many motors, VFDs, or welding machines operate nearby. Distance becomes irrelevant with fiber. As automation systems evolve toward distributed architectures and smart factories, high-speed and long-distance communication between PLC modules. FS PLC Fiber Optic Splitters, Bare/Blockless/ABS/LGX Splitter/Rack Mount Types, support 1xN light distribution, with low IL and PDL for high-reliability transmission. Deploying compact FS PLC Splitters to simplify your networks, perfectly fits your PON, EPON, FTTX, etc. Corning's. PLC communication refers to connecting the PLC to other systems for purposes such as program download/upload, data exchange, connection with data servers, historian servers, and SCADA systems. In this article, we will clearly understand the different ways in which a PLC can be connected to another. Embedded Industrial Electronics How to use optical fiber to communicate between host computer and PLC over long distances? How to use optical fiber to communicate between host computer and PLC over long distances? Can the PLC and the host computer communicate if they are not in the same network.