Unknown
Modbus
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Application Layer — Industrial
Protocol Overview
Full Name
Modbus
Abbreviation
Modbus
OSI Layer
Application Layer
Category
Industrial
Default Port
502
About Modbus
Serial communication protocol developed in 1979 for programmable logic controllers. Uses master/slave architecture with register-based data access. Ubiquitous in SCADA and industrial automation.
Application Layer
Industrial
Port 502