Chengdu Ebyte Electronic Technology Co., Ltd.
E831-RTU (6060-ETH) User Manual
4.1 Working Mode
The operating modes are divided into master mode and slave mode, configured via Modbus register 40081 (0x0050). Host
mode when the register value is 0; When the register value is 1, slave mode is the default slave mode.
4.1.1 Slave Mode
In the slave
mode
(register value is 0x01), the network side or the 485 bus side (sender side). The data sent to the device
satisfies the Modbus RTU, Modbus TCP agreement, and the address in the data is the device address, and the device will reply to the
sender in the same protocol; If the
data sent to the device by the network side or
the 485 bus side does not meet the Modbus
RTU, Modbus TCP protocol, or the Modbus RTU If the
Data
Address is not the device address of the Modbus TCP Protocol,
the data on the sending end will be discarded .
In slave mode, the device can directly connect to the device in master mode through the 485 bus, so that if the slave is not
networked, the network side can also access the slave data through the host.
4.1.2 Host Mode
In host mode (register value is 0x00), network side, or 485 bus side (send side). The data sent to the device meets the
Modbus RTU, Modbus TCP proto co l , and the address in the data is the device address, and the device will reply to the
sender in the same protocol; If the data
sent to the device by the network side or
the 485 bus side does not meet the
Modbus RTU, Modbus TCP protocol, or modbus RTU, Modbus TCP protocol, but in the case that the data address is not the device
address,
the
data
from
the 485 bus will be transmitted to the network, and the data from the network will be transmitted to the
485 on the bus.
This feature of the host mode enables device cascading and
data transfer
on the 485 bus and network.
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