RS485 to RJ45 Ethernet Module - Review

The RS485 to RJ45 Ethernet Module with POE from Waveshare is marketed as an industrial serial server that also acts as a Modbus MQTT gateway, supporting bi-directional transparent data transmission between RS485 and Ethernet. This device comes with rail-mount support, making it easy to combine multiple rail-mounted serial servers together, providing for more flexible usage.

One of the biggest features of this product is its multi-communication modes. It supports TCP server, TCP client, UDP mode, and UDP multicast, which allows for communication with a wide range of network devices without interference. It also features a multi-host roll-polling support mechanism whereby different network devices are identified and responded to respectfully, thus eliminating crosstalk issues.

The RS485 to RJ45 Ethernet Module offers various configuration methods, including Web browser configuration, dynamic IP via DHCP, and connection to domain server address through the DNS protocol. This makes it easy for the user to configure the device to suit their specific needs. It also supports Modbus gateway function, which is suitable for Modbus gridding upgrade, and it can be used with 3D configuration software.

It is worth noting that this device also supports Modbus RTU to Modbus TCP, which is a significant feature for industrial-grade equipment. It can support storage-type Modbus, and it can automatically collect device data and store it. It also supports the non-storage mode Modbus gateway, giving the user more flexibility in selecting a suitable gateway mode.

The RS485 to RJ45 Ethernet Module from Waveshare supports several protocols, including JSON to Modbus RTU and 645-meter protocol, and it supports HTTP POST and HTTP GET format to upload data. It also supports custom heartbeat and registration package function, which is convenient for communicating with the cloud and identifying devices. The device offers password authentication function to establish a connection through TCP and ensure connection security.

Although the Waveshare RS485 to RJ45 Ethernet Module with POE has many positive features, some customers have been disappointed with its overall performance. The product has a low customer review rating of only 2.0 out of 5 stars from a single review. The reviewer had issues getting the device to work correctly, and ultimately, they ended up returning it. It is worth noting that many customers may not have been able to leave a review due to the niche market and specialized usage of this product.

In conclusion, the Waveshare RS485 to RJ45 Ethernet Module with POE is a suitable industrial serial server that can also act as a Modbus MQTT gateway, with bi-directional transparent data transmission between RS485 and Ethernet. It comes with rail-mount support and offers multiple communication modes and configuration methods, supporting several protocols, including Modbus and JSON. However, with the limited number of customer reviews, it is essential to proceed with caution and evaluate the device's suitability thoroughly before purchasing.

RS485 to RJ45 Ethernet Module

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