
DIGITAL DATA COMMUNICATIONS FOR MEASUREMENT AND CONTROL - FIELDBUS FOR USE IN INDUSTRIAL CONTROL SYSTEMS - SECTION 1: MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1A - SECTION 2: REAL-TIME PUBLISH-SUBSCRIBE (RTPS) WIRE PROTOCOL SPECIFICATION VERSION 1.0
出版:International Electrotechnical Committee

專家解讀視頻
Describes MODBUS as 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.