Modbus Gateway; Protocol Conversion; Simple Protocol Conversion; Multi Host Mode - Ebyte EBT3002 T6 User Manual

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Chengdu Ebyte Electronic Technology Co., Ltd.

Enable: The device does not save the data received by the serial port before the connection is

established.

Disabled: After the connection is established, the network will receive data cached through the

serial port.

5.4 Modbus gateway

Enable: Verify Modbus data, discard non Modbus data (RTU/TCP) for transmission, and convert

Modbus RTU protocol to Modbus TCP protocol.

Disabled: Modbus data is verified without protocol conversion, and non Modbus data (RTU/TCP)

is discarded and not transmitted.

Convert Modbus RTU data to Modbus TCP data, or convert Modbus TCP data to Modbus RTU

data, to achieve mutual conversion between Ethernet Modbus data and serial port Modbus data.

Simple protocol conversion can work in any mode (TCP client, TCP server, UDP client, UDP

server, MQTT client), and this gateway mode does not support multi host operation. If multiple hosts

are required, please use "storage gateway" and "multi host mode".

Relatively simple protocol conversion can only exist with one Modbus master station, while

multi host mode can simultaneously access multiple Modbus TCP hosts. When multiple Modbus

hosts access at the same time, the Modbus gateway will schedule bus occupancy (RS-485 bus can

only process one request at a time, while multi host mode will sort and process TCP requests based

on their order, while other links will wait), In order to solve the bus conflict problem (currently, in

single server mode, up to 9 Modbus TCP host connections are supported. When multiple hosts are

connected simultaneously, attention should be paid to matching the request interval and timeout time,

EBT3002 User Manual

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