How to know what data the RS485 differential signal (between AB) is?

yhye2world

How to know what data the RS485 differential signal (between AB) is? [Copy link]

 

Ask: How to know what the RS485 differential signal (between AB) is? Thank you!

仙猫

Find a serial monitor and have a look.

yhye2world

Xianmao posted on 2017-11-12 16:36 Find a serial port monitor.

I searched on Baidu and the serial port is OK, but I don't know if the differential signal is OK

shihuntaotie

Measure any line and ground, and then use the serial port to analyze. The analysis of one line needs to be reversed.

仙猫

yhye2world posted on 2017-11-12 23:04 I searched on Baidu and the serial port is OK, but I don't know if the differential signal is OK

This is just a software, and it is estimated that the premise is to use the serial port on the PC, but the top floor only mentioned 485, and did not say whether it used the PC serial port. If you want to use it regardless of whether it is a PC, you need to find a hardware serial port monitor that can observe the 485 level.

yhye2world

Xianmao posted on 2017-11-13 08:53 This is just a software. I guess the premise is to use the serial port on the PC. The top floor only mentioned 485, but did not say whether it used the PC serial port. If you want to use it regardless of whether it is a PC...

Thank you, I learned a lot     

ienglgge

Go to Taobao to buy a 485 to USB cable, install the driver, and then you can use the host computer software to receive data.

yhye2world

ienglgge posted on 2017-11-13 14:25 Go to Taobao and buy a 485 to USB cable, install the driver, and you can use the host computer software to receive data.

Thank you, I learned a lot