The IEC 60870-5-103 (IEC 103) protocol remains one of the most widely used communication standards for protection equipment in electrical substations. Engineers, technicians, and SCADA developers rely on it to exchange event data, trip information, timestamps, and analog values between protection relays and control systems. Whether you’re commissioning new equipment or analyzing fault records, having a reliable IEC… Read More »
Do you ever look at a Modbus hex string and wonder what it really means?Are you trying to check if your PLC or SCADA system is sending the right values?Or do you just need to quickly create a Modbus command to test a device? This Free Online Modbus Decoder and Encoder is built to make those tasks easy.… Read More »
In the world of industrial automation and SCADA systems, the DNP3 protocol (Distributed Network Protocol 3) plays a critical role in enabling secure and reliable data communication between devices. Whether you’re a utility engineer, cybersecurity analyst, or automation developer, decoding DNP3 frames is essential for troubleshooting, compliance, and interoperability. Manually decoding DNP3 hexadecimal data is time-consuming and error-prone.… Read More »
The IEC 60870-5-104 protocol (usually called IEC-104) is one of the main communication standards used in SCADA and substation automation. It defines how control centers, RTUs, and gateways exchange data over TCP/IP networks. If you work with substations, automation, protocol testing, or energy systems, you’ve probably seen IEC-104 hex frames. Reading these frames by hand is slow and… Read More »
Looking for a quick, hassle-free way to decode IEC 101 frames? This free IEC 101 Decoder runs entirely in your browser and turns raw hex into clear, readable text instantly. No installs, no setup, no extra tools. Just paste your data and get answers. It also handles originator addresses and can automatically tell whether your frame uses a… Read More »