About MODBUS 1
What is MODBUS ? MODBUS is an application layer messaging protocol, positioned at level 7 of the OSI model, which provides client/server communication between devices connected on different types of...
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The “About MODBUS 1” 1 is for MODBUS at OSI level 7, this part from “MODBUS over Serial Line Specification and Implementation Guide” which is for MODBUS at OSI level 1 & 2. MODBUS Serial Line...
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This is for MODBUS for TCP/IP. In MODBUS part 2 (for Serial Port Line), we saw MODBUS had master / slave model, master sent request to slave. In TCP, MODBUS has Server / Client mode. Client sends req,...
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