If you are the person who has to build up an industrial network, you have probably been in this exact situation: Your serial device server works perfectly when connected to one local HMI. The polling is fresh, and the data is sound. But as soon as you connect a second SCADA system from the central…
Engineer’s Note: When migrating from legacy industry standards such as the Moxa NPort series, the topology should be carefully planned. This evaluation is written for system integrators and automation engineers tasked with deploying reliable, low-latency SCADA (Modbus/MQTT) systems in modern IT/OT converged environments. Moxa’s NPort 5110 and 5150 have been the default baseline standard for…
Modbus RTU to Modbus TCP Gateway Setup Guide You’ve wired the RS485 terminals, set the IP address, and successfully pinged the device. Yet, your SCADA screen is still flashing a “Connection Timeout” error. A Modbus RTU to TCP gateway is not a cable that you plug in and it works—it’s an active protocol translator. Bridging…
Bridging legacy operational technology (OT) with modern IT networks is rarely straightforward. Whether you are dealing with unexplained Modbus polling timeouts, ground loop interference on the factory floor, or struggling to make legacy supervisory software recognize an IP address, choosing the wrong serial-to-Ethernet converter will guarantee system downtime. There is no universal “plug-and-play” device. The…
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…
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…
Here’s a number that might surprise you: RS232 is still used in 30–40% of industrial equipment—PLCs, scales, CNC machines, medical devices, and test equipment. It’s been around since 1969, and it’s not going away anytime soon. But here’s the frustrating part: 25–30% of communication failures in serial networks come from simple wiring errors. Another 15–20% come from grounding…
