Ethernet & Communication Modules

Reliable industrial communication is the backbone of modern automation. Whether the goal is to connect PLCs, sensors, vision systems, remote I/O, or edge devices, the right network hardware helps maintain data flow between machines, control systems, and higher-level software without adding unnecessary complexity.

Ethernet & Communication Modules cover a broad range of devices used to build, expand, and stabilize industrial networks. In this category, you can find products for wired connectivity, field deployment, edge communication, and machine-to-network integration, with examples from manufacturers such as Advantech and ams OSRAM where relevant to industrial communication and sensing ecosystems.

Where Ethernet and communication modules fit in industrial systems

In industrial environments, communication hardware does more than simply pass data from one point to another. It supports machine coordination, remote monitoring, protocol bridging, edge data collection, and integration between production equipment and supervisory platforms. This becomes especially important when systems need to operate continuously and exchange information across multiple devices.

Depending on the application, the category may include unmanaged switches for straightforward network expansion, routers for remote access and segmented connectivity, and gateways for linking serial equipment to Ethernet-based systems. In many installations, these devices work alongside industrial controllers to create a practical automation architecture from the machine level up to plant-wide monitoring.

Typical product types in this category

A common requirement in factories and utility sites is basic Ethernet distribution. An unmanaged switch such as the Advantech EKI-2720 is suitable when the priority is to connect multiple network nodes quickly and reliably without advanced configuration overhead. This type of device is often used in control cabinets, machine cells, and distributed industrial panels.

For remote communication or network separation, industrial routers are another important part of the category. Models such as the Advantech BB-SR30010120-SWH, Advantech BB-SG30000520-42, and Advantech BB-LR2B710011 illustrate how routing hardware can support secure data paths between local equipment and external systems. Where legacy serial devices still play a role, a gateway such as the Advantech ECU-1051 IoT Gateway can help bridge RS-232/422/485 communication into an Ethernet-enabled environment.

Communication modules in sensing and machine interface applications

Not every communication architecture starts with a switch or router. In many automated systems, communication begins at the sensing layer, where optical components detect position, presence, motion, or object passage before that information is transmitted to a controller or networked device. This is where supporting technologies from manufacturers like ams OSRAM may be part of a wider automation solution.

For example, parts such as the ams OSRAM SFH4881-Z, SFH4556-Z, and SFH4545-Z infrared emitters, together with the SFH5440-Z photodetector Optoschmitt, are relevant in optical sensing chains that feed machine logic and communication systems. In more specialized applications, components like the ams OSRAM SPLPL85 laser diode can support precise optical functions. While these are not network switches themselves, they are often part of the data acquisition path that eventually connects into industrial Ethernet infrastructure and, in some cases, into cameras and accessories or other inspection systems.

How to choose the right communication hardware

The best starting point is the communication task itself. If you only need to expand port count inside a cabinet, a simple switch may be enough. If you need to connect equipment across different network segments, provide WAN access, or manage remote assets, a router or gateway is usually more appropriate. For mixed environments with serial and Ethernet devices, protocol and interface compatibility should be checked early in the selection process.

It is also important to think about installation conditions. Industrial applications often require support for stable power input, compact mounting, and tolerance for electrical noise or demanding operating environments. Beyond the hardware itself, buyers should consider how the device fits the broader system design, including control hardware, field devices, and any supporting functions such as circuit protection within the panel.

Why gateways and routers matter in IIoT projects

As more facilities adopt remote diagnostics, data logging, and edge-level analytics, industrial gateways and routers play a larger role in connecting operational technology to IT systems. A gateway can collect data from local equipment using existing interfaces and make that data available for monitoring, reporting, or further processing. This is especially useful when older machines must be integrated without a complete redesign.

The Advantech ECU-1051 IoT Gateway is a good example of this role, combining Ethernet connectivity with serial communication interfaces and local data logging capability. In distributed installations, routers such as the Advantech BB-LR2L710714-SWH can support connectivity beyond the local control panel, helping users build a more scalable communication layer for industrial assets.

Building a practical communication ecosystem

Industrial communication hardware rarely works in isolation. A switch may connect HMIs, PLCs, IPCs, and remote I/O, while a gateway may pull machine data into an edge platform and a router may handle remote site access. When these pieces are selected correctly, the result is a more coherent and maintainable system rather than a collection of disconnected devices.

In applications where motion, counting, or event detection are part of the process, communication modules also support the flow of data from field sensing to control logic and reporting. That is why buyers often evaluate these products together with related categories such as counters and tachometers, especially when machine status and production data need to be captured consistently.

Examples of products found in this category

This category may include representative products such as the Advantech EKI-2720 Unmanaged Switch, Advantech ECU-1051 IoT Gateway, Advantech BB-SR30010120-SWH router, and Advantech BB-SG30000520-42 router for network and edge communication tasks. It may also include optical and semiconductor components that support communication-adjacent sensing functions, such as the ams OSRAM SFH5440-Z photodetector, SFH4881-Z infrared emitter, and Q65111A7105 other optical semiconductors.

For technical buyers, these examples show the breadth of the category: not just one device type, but a set of hardware building blocks that can support machine connectivity, remote communication, and integration across industrial systems.

Final considerations

Choosing Ethernet and communication modules is ultimately about matching network function, interface requirements, and deployment conditions to the needs of the application. Some projects need simple Ethernet expansion, while others require edge data collection, serial-to-Ethernet conversion, or remote routing for distributed assets.

By comparing the communication role of each device and its place within the larger automation system, buyers can narrow down suitable options more efficiently. This category is designed to support that process with products relevant to industrial networking, machine connectivity, and practical integration across modern control environments.