Modbus Master

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MODBUS Master Test Suite Data Sheet

Test Suite:

MODBUS Master Test Suite

Direction:

Client

MODBUS is an application layer messaging protocol, positioned at level 7 of the OSI model, that provides client/server communication between devices connected on different types of buses or networks. MODBUS is a request/reply protocol and offers services specified by function codes. MODBUS function codes are elements of MODBUS request/reply PDUs. MODBUS TCP is an encapsulation method for MODBUS that provides support and transfer for most MODBUS functionalities over TCP/IP.

Used specifications

Specification

Title

MODBUS

MODBUS APPLICATION PROTOCOL SPECIFICATION v1.1b

MODBUS TCP

Modbus Messaging Implementation Guide v1.0b

Tool-specific information

Tested messages

Notes

Specifications

Read Coils