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C613-50631-01 Rev A Command Reference for IE340 Series 3463
AlliedWare Plus™ Operating System - Version 5.5.3-0.x
MODBUS
Commands
Introduction
Overview This chapter provides an alphabetical reference of commands used to configure
MODBUS (Modicon Communication Bus).
MODBUS is a serial communications protocol for client-server communication
between a switch (server) and a device in the network running MODBUS client
software (client). You can use MODBUS to connect a computer to a remote terminal
unit (RTU) in supervisory control and data acquisition (SCADA) systems.
The MODBUS feature allows AlliedWare Plus™ devices to be used for some SCADA
processes - such as gathering sensor and alarm information and to control and
monitor the state of ports and their PoE state.
The device encapsulates a request or response message in a MODBUS TCP
application data unit (ADU). A client sends a message to a TCP port on the switch.
The default port number is 502.
For more information, see the MODBUS Feature Overview and Configuration
Guide.
Command List •“clear scada modbus tcp server connection” on page 3464
•“clear scada modbus tcp server statistics” on page 3465
•“scada modbus tcp server access” on page 3466
•“scada modbus tcp server access permit” on page 3467
•“scada modbus tcp server connection” on page 3468
•“scada modbus tcp server port” on page 3469
•“scada modbus tcp server” on page 3470
•“show scada modbus tcp server connections” on page 3471
•“show scada modbus tcp server” on page 3473
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