Thin-film filter and PLC based AWG for multiplexing, a full suite of components for optical amplification use, optomechanical or MEMS-based switches for protection or surveillance application, Tap PD for power monitoring and VOA for power management, circulator for. Thin-film filter and PLC based AWG for multiplexing, a full suite of components for optical amplification use, optomechanical or MEMS-based switches for protection or surveillance application, Tap PD for power monitoring and VOA for power management, circulator for. Modern Programmable Logic Controllers (PLCs) are central to industrial automation, controlling machinery, production lines, and complex processes. As automation systems evolve toward distributed architectures and smart factories, high-speed and long-distance communication between PLC modules. Everything you need to build an optical network from end-to-end. The programming and execution capabilities that software. PLCs are general-purpose microprocessor-based controllers that provide logic, timing, counting, and analog control with network communications capability. A PLC consists of the required quantities of the following types of modules or cards, mounted on a common physical support and electrical. A PLC (Programmable Logic Controller) is made up of both hardware and software components. The PLC hardware refers to the physical components that make up a PLC system.