What port does Modbus use?

Modbus uses port 502 by default.

Unknown

Modbus

Q: What is Modbus?

Modbus (Modbus) is a Application Layer protocol in the Industrial category. 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

プロトコル概要

正式名称 Modbus

略称 Modbus

OSIレイヤー Application Layer

カテゴリ Industrial

デフォルトポート 502

概要 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 ポート 502

Modbus

プロトコル概要

概要 Modbus

関連プロトコル — Application Layer