A military outpost needs radar data from a hilltop 3 kilometers away. Radio jammers are active. Copper cable is impossible. Fiber is the only option—but the radar speaks RS232. A factory floor has five VFDs running conveyors. Every time a motor starts, RS485 data from nearby temperature sensors turns to garbage. The control room is…
RS485 is the backbone of industrial automation, but when communication drops, troubleshooting can be a nightmare. While it often runs for years without trouble, random timeouts, node dropouts, or corrupted data frames can bring a production line to an expensive halt. When an RS485 network fails, it’s usually due to one of a few common…
When you are adding I/O to an industrial control system you will have to choose between three protocols: EtherNet/IP, PROFINET and Modbus TCP. People usually think it is easy: if you have a Siemens PLC you should use PROFINET. If you have a Rockwell PLC you should use EtherNet/IP. For everything you should use Modbus…
RS485 repeaters do one thing: they take a RS485 signal in and send a clean copy of the RS485 signal out. They work well when the RS485 repeaters are wired correctly. According to maintenance logs from industrial sites, over 80% of repeater-related problems come from installation errors, not defective hardware . The RS485 standard specifies a maximum…
RS485 can handle up to 32 devices on a single pair of wires—If you do the wiring correctly everything will work properly.. If you get it wrong you will waste a lot of time trying to find and fix problems that happen sometimes like messed up data or nothing working at all. The standards for…
You search for “best fiber optic modem” and you get list after list of home gear. Wi-Fi speeds. Mesh coverage. Which router works best with Verizon Fios. If you’re putting a fiber link in a factory, a substation, or a remote monitoring site, those lists are useless. This guide is for industrial users. Here’s what…
Media converters used to be simple: copper in, fiber out. You bought them when you needed to go past 100 meters or when electrical noise made copper unreliable. That was then. In 2026, media converters are doing things that would have seemed impossible five years ago. They’re carrying 25Gbps over copper, powering 90W devices over…
An RS485 to Ethernet converter does one thing: it takes data from your serial device and puts it on the network. Simple idea. But the first time you try to set one up, it’s never quite as simple as it looks. Default IP addresses. Serial parameters that have to match exactly. TCP Server vs. TCP…
Industrial cellular modems (sometimes called DTUs) do one thing: they take data from serial devices—PLCs, sensors, meters—and send it over cellular networks. This is a simple idea. However when you are trying to pick the industrial cellular modem for a real world installation that is where things can get really tough. You have to think…
The Real Cost of a Weak RS485 Link Industrial automation isn’t slowing down. According to the International Federation of Robotics, UK industrial robot installations jumped 51% in 2024, and the Americas saw over 55,000 new installations—the third consecutive year above 50,000 units. Every one of those robots, PLCs, sensors, and drives likely communicates over RS485. But here’s a number that…
