4. Product Features
4.1 Working Mode
The working mode is divided into master mode and slave mode, which are configured through Modbus register 40081
(0x0050). When the register value is 0, it is the master mode; when the register value is 1, it is the slave mode, and the
default slave mode.
4.1.1 Slave Mode
In slave mode (register value is 0x01), the data sent by the network or 485 bus (sender) to the device complies with the
Modbus RTU and Modbus TCP protocols, and the address in the data is the device address, and the device will respond
with the same protocol. If the data sent by the network end or the 485 bus end to the device does not meet the Modbus
RTU and Modbus TCP protocols, or if it meets the Modbus RTU and Modbus TCP protocols but the data address is not
the device address, the data at the sending end will be discarded.
In the slave mode, the device can directly connect to the device in the master mode through the 485 bus, so that when the
slave is not connected to the Internet, the network can also access the data of the slave through the host.
4.1.2 Host Mode
In the host mode (the register value is 0x00), the data sent by the network terminal or the 485 bus terminal (sender) to the
device complies with the Modbus RTU and Modbus TCP protocols, and the address in the data is the device address, and
the device will respond to the sender with the same protocol. ;If the data sent by the network terminal or the 485 bus
terminal to the device does not meet the Modbus RTU, Modbus TCP protocol, or meet the Modbus RTU, Modbus TCP
protocol but the data address is not the device address, the data from the 485 bus will be transmitted to the network , the
data from the network will be transmitted to the 485 bus.
