Single -chip Machine TTL to RS485 module 485 rotation port UART level mutual rotor hardware automatic control flow

485 Module 51 Single -chip Summit Sales Code: https://pan.baidu.com/s/1jikrhns

A chip is controlled by 485 and automatic flow control. The internal integration of the chip is integrated with automatic flow control.

This module has achieved machine patch welding (web pictures are hand -welded by old pictures).

This baby is developed by our joint -service hardware engineer. Benbao is not a development board. It does not provide technical documents such as schematic diagrams and PCB. It only sells products. Please take care of customers who need it.For the wiring of the module, refer to this article. According to the introduction, we will definitely use our device.Thank you for Gu Gu ...

For some buyers' module installation holes, please refer to the example of the picture below. There is no problem after testing the installation hole.There is a phenomenon of welded beads next to the large resistance of the module (the welding beads caused by the frying tin phenomenon that appears welded by the machine) is indeed not enough to clean up. The latest modules that are issued now have special persons to detect and clean up. Please buy it at ease.

Features of this module:

1. We guarantee that all chips are the new original imported industrial -grade chips, and ultra -long -distance transmission can reach thousands of kilometers.

2. ESD protection with positive and negative 15kV

3. The chip has a limit driver to reduce EMI and reduce signal reflection caused by inappropriate terminal matching cables, so that the transmission rate of no error -free signal is as high as 500kbps.

4. Input impedance with a load of 1/4 unit of load, support multi -machine communication, allows connecting to a bus with no more than 128 devices.

5. The operating temperature of industrial-grade chips can reach -40 ° C to+85 ° C.

6. This module can be plugged out, and there will be no other 485 chip hot insertion signal bolt.

7. Use a patch 电 electrolytic capacitor with a power supply, and use dual -capacitance for high and low -frequency power source filtering

8. Use dual transient inhibitory diode, excellent over -pressure protection performance

9. Use 10Ω current protection resistance, patch design improves 485 signal integrity

10. Have terminals and welded lead holes, which is convenient for debugging and fixed -version wiring. Welding lead can improve signal reliability

11. RS485, TTL signal all single -sided wiring to ensure signal quality and improve signal integrity

12. Paper copper in large areas to prevent signal interference

13. Have a 2.54 -distance cave plate welding hole, which is convenient for your second development

14. Have the current M3 screw holes that are currently quite commonly used, convenient and reliable installation

15. With a 120Ω terminal connection resist

16. Have power supply and RXD and TXD signal indicators.

17. Corner pins are led to easy testing

18. Support 3.3V and 5V signal control, strong compatibility

As we all know, the flow of the 485 signal is very difficult to write a program, especially in the occasion of some unknown communication data protocols. If you do n’t know when the amount of data of the data per package, you do n’t know when to convert the receiving direction. Then you can choose the 485 automatic flow control of our storeModule, solve the above troubles.The protection function of this module is beyond the value. You can compare with other 485 control modules. You will find that the design of this module is reasonable and value -for -money

The TTL to 485 automatic flow control module launched by this shop. This module uses the 485 chip of Maxim's integrated automatic receiving function. It never uses an external automatic control chip.

This module is a joint -service hardware engineer in our store. It is designed and produced according to the rich actual product research and development experience, and each module is strictly tested to support the 500Kbps baud rate and its following operations (Shenma's current mainstream 2400bps, 4800bps, 9600bps, 19200bps, 38400bps, 57600bps, 115200bps, 128000bps, 256000bps, etc., all identify and automatically select the appropriate communication rate mode), and never use an external control chip.

At the beginning of the design, this module was considered in harsh environments, so it improved the integrity and EMC characteristics of module signal. This chip has been used in regular industrial -grade products, so its performance is very reliable.

The module is recommended to use 5V power supply (because the 485 signal level range is 2-6V, so 3.3V power supply is reduced by reducing long-distance reliability), and 3.3V and 5V signal control can be used (Note: power supply uses 5V, signal use 3.3V support, support, support, support, support, 3.3V support,We have already made signal protection, please rest assured)

If you have stricter signal requirements, please use this module. This module has a 500kbps baud rate automatic flow control function, and automatically recognizes it under the case of 500KBPS baud rate without artificial intervention.

Even if you don't believe the results of our store in automatic receiving and receiving, you will definitely believe that the international famous large manufacturer Maxim Meixin develops a chip with automatic transception function.

485 module 51 single chip machine sample program code: http://pan.baidu.com/s/1i3zq0lf