1 Product Overview

Schematic diagram of 485 bus sharer

Functional diagram

DAQ-GP-485HUB is an RS 485 bus multiplexing shared data processor launched by Shanghai Digital IoT . It is a high-performance communication device designed specifically for data conflicts caused by communication between two hosts and one slave . In actual industrial control and monitoring scenarios, multiple hosts sending requests at the same time will cause data conflicts and affect the stability and reliability of the system. The interface achieves high-speed and stable communication. The processor supports multiple protocols and has adjustable baud rate to meet the communication needs of various scenarios . In addition, the processor also has excellent rail installation and is compact, which is convenient for installation and use in limited space. In short, this multiplexer R S485 The hub is a high-performance, reliable industrial device that can stably and efficiently resolve data conflicts caused by communication between two hosts and one slave, thus improving the stability and efficiency of the entire system. It is a product that is highly recommended and worth using.

2 Service Concept

Our company solemnly promises:

You buy not only the product, but also the meticulous and thoughtful technical support service ! ! ! ( =^_^= )

This product only needs ordinary workers to connect the power and install it on site! No debugging is required!

We provide free remote guidance, remote configuration and debugging services, and send data to the user's designated cloud platform.

Free IoT solution consulting services!

3 Product Features

4 Core advantages of products

1. This product adopts reliable power supply mode, DC 10-30V Power input.

2. Support adjustable baud rate, which can be 1200 bps arrive 23040 0 bps Choose between.

3. The product supports multiple protocols and can be connected to meet the needs of different application scenarios.

4. Support MODBUS , DLT645 Communication protocol, convenient and fast to realize data transmission and remote control.

5. Equipped with computer parameter configuration software, users can easily configure and debug.

6. The feature of guide rail installation takes up little space.

7. Data processors process data faster than data buffers.

8. 3 Group RS485 Interface with ESD Interface protection.

5 Usage and software configuration

Wiring Diagram

1) Instructions for use of host computer software

When the computer configures the module parameters, the computer's RS485 Connecting to the module RS485 After the module is powered on, all five indicators will light up, and then click the connection on the computer configuration software.

Notice:

The module can be configured only during the first five seconds after it is powered on.

Five seconds before the module is powered on, all the indicators will light up. 

(2) Software page

(3) Troubleshooting, RS 485 There may be many reasons why the communication connection fails. The following are some common problems that may cause connection failures and their troubleshooting methods:

1. Wiring error: Check whether the connection line is connected correctly and whether there is any wiring error. Make sure the connection line is not short-circuited.

2. Baud rate setting error: Check whether the baud rate of the connected device is consistent with RS 485 The baud rate parameters on the communication devices are consistent.

3. The device address is set incorrectly: Check whether the connected device has the correct address set.

4. Transmission distance is too far: RS 485 The transmission distance of communication is limited. If the distance is too far, the communication connection will fail. Solve this problem by adding a signal booster.

5. Equipment failure: Sometimes the communication device itself may fail, resulting in a connection failure. In this case, you need to check the hardware of the device. Whether it is normal, including whether the power supply is stable and whether there is any physical damage.

6. Program or protocol error: RS 485 Communication may also have program or protocol related problems. You can reconfigure parameters, protocols or replace software to solve the problem.

In summary, it is necessary to eliminate the problems one by one according to the actual situation to determine the specific cause of the connection failure. You can eliminate the common problems step by step according to the above , which can provide some help in solving the connection failure.