300+ SCADA Protocol Articles & Guides
Deep dives on Modbus, DNP3, IEC 60870-5-101/104, IEC 61850, OPC UA, Profinet, MQTT, IEC 62443, and substation automation — written for practicing engineers.
Wireshark ICCP: How to Decode TASE.2 Traffic
Wireshark ICCP analysis: capture ports 102 and 3782, fix MMS decoding, tell ICCP from IEC 61850, and read associations, transfer reports, and device controls.
The ICCP Protocol Stack: OSI Over TCP/IP Explained
ICCP protocol stack layer by layer: TASE.2, MMS and ACSE over OSI presentation and session, ITOT (RFC 2126) on TCP/IP, ports 102/3782, selectors, QOS and priority.
Process Bus vs Station Bus: IEC 61850 Architecture
Process bus vs station bus in IEC 61850: which protocols run on each, time sync and hardware differences, redundancy, bandwidth, and procurement guidance.
Wireshark IEC 61850 MMS: Decode Client/Server
Wireshark IEC 61850 MMS capture and decode: the PRES user context fix for port 102, association setup, Read and Write services, reports, and control sequences.
4 Best IEC 61850 Test Software for GOOSE & MMS (Engineers’ Guide)
**61850 Test Software** is essential for validating communication, interoperability, and correct behavior in modern digital substations. From GOOSE messaging and MMS communication
IEC 61850 MMS Port 102 Explained
IEC 61850 MMS port 102 explained: why the ISO-on-TCP port was kept, what data rides on it, how GOOSE and SV differ, Wireshark filters, and firewall rules.
IEC 61850 MMS Explained: Reporting, Control, Services
IEC 61850 MMS explained end to end: the client-server model, how the object model maps to MMS, the service set, the communication stack, and real applications.
DNP3 vs IEC 61850: Full Technical Comparison of SCADA and Digital Substation Protocols
DNP3-IP, designed for distribution SCADA and remote telemetry, and IEC 61850, built for advanced substation automation and high-speed protection schemes.