485 wireless transmission communication module

wzzlin123

485 wireless transmission communication module [Copy link]

485 wireless transmission communication module ZLAN9700/ZLAN9743 LoRa is a cost-effective long-distance wireless communication solution. Compared with GPRS and 4G solutions, LoRa does not require monthly network rental fees, and has a longer distance than Wifi and Zigbe . Therefore, LoRa is increasingly widely used in small data long-distance communications. The outdoor line-of-sight communication distance is 8km , with the characteristics of long distance, low power consumption and anti-interference. At present, ZLAN LoRa products are divided into two categories, one is serial port to LoRa , model ZLAN9700 , which contains 3 serial port forms, namely RS232/485/422 ; the other is Ethernet ( TCP/IP ) to LoRa , model ZLAN9743 , which can connect LoRa and the Internet.

When used as wireless transmission communication between two serial port devices, connect two ZLAN9700 ( device A and device B in the figure ) to the serial ports of the devices respectively, and the serial port data of the two devices can be forwarded to each other through the LoRa network;

When collecting device data through TCP/IP of the host computer , connect the network port of a ZLAN9743 to the Ethernet network, and multiple ZLAN9700 can be connected to the device to collect data, transfer the data to 9743 through LoRa , and 9743 transfers it to the computer through Ethernet. The computer and 9743 can use Modbus TCP , virtual serial port, JSON , TCP/IP protocol and other modes.

Features

1. Features

1. The communication distance is long. The measured distance is:

Table 1. ZLAN9700/9743 communication distance

Test environment	Test distance
Unobstructed communication	About 8Km
Urban road linear propagation	About 6Km
The city has buildings blocking the environment	About 1Km
Inside the building	Passing through 5 floors

2. ZLAN9743 has a multifunctional LoRa to Ethernet function, which can realize LoRa to TCP/IP .
   1. Can be configured as TCP server, TCP client, UDP and other modes.
   2. Equipped with Windows virtual serial port & device management tool ZLVircom , supporting virtual serial port.
   3. Supports Modbus TCP to Modbus RTU mode to collect data.
   4. Supports Modbus RTU and 645 protocol devices to automatically collect data and send it to the server in JSON format + MQTT protocol.
3. The LED indicators indicate the data flow direction, LoRa communication status, and device operation status, respectively, intuitively reflecting the device status.

qwqwqw2088

Ethernet (TCP/IP) to LoRa networking,

How many nodes can be used?