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Chapter 8 Communication protocol
G10 series inverters provide RS-485 communication interface and adopt the international
standard Modbus-RTU format communication protocol for master-slave communication.
The user can realize centralized control (set the inverter control command, operating
frequency, modification of relevant Code parameters, inverter working status and fault
information monitoring) through PC/PLC, control host computer, etc., to adapt to specific
application requirements. .
8.1 Protocol content
The Modbus serial communication protocol defines the frame content and usage
format for asynchronous transmission in serial communication. These include: host polling
and broadcast frame, slave response frame format; host organization frame content
includes: slave address (or broadcast address), execution commands, data and error
check. The response of the slave also adopts the same structure, including: action
confirmation, return data and error check. If the slave encounters an error while receiving
a frame, or fails to complete the action requested by the host, it will organize a fault frame
as a response to the host.
8.2 Application method
The G10 series inverters can be connected to a "single-master multi-slave" control
network with RS-485 bus.
8.3 Frame
(1) Interface mode
RS-485 hardware interface
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