Serial Communications not working at all

Serial comms troubleshooting tips? : r/PLC - Reddit

Most problems you encounter are from physical wiring issues. Polarity swap, incorrect terminators, lose connection, incorrect shielding, not ...

Why is my serial communication not working? - Stack Overflow

Open Putty, try to connect to your serial cable. Hit any key on your keyboard. Baud rate and things don't matter because it's a loopback. If you ...

5 Common Serial Port Problems - Stratus Engineering

The most common cause of serial port communication problems is incorrect communication parameter settings. To operate correctly it is essential ...

Serial Communication fails after a minute or so of running

You were probably violating the requirement not to request data more than 20 times per second. Although you had a 50 msec delay in there, that ...

Windows 10 comm ports (again) - Microsoft Community

To solve the problem, temporarily disable the serial port and see if it helps. Com port cannot be opened win error code 5, 123, 32 – These are ...

Serial General Troubleshooting - StarTech.com

Serial cables. Serial ports · Use the serial cable, serial port, and serial device in another setup to see if the problem is with the components or the setup.

Serial Communication doesn't work sometimes. - Arduino Forum

Most of the time it works very well. But sometimes it seems the arduino isn't initialized properly. When i write some data to it, it doesn't ...

Troubleshooting RS-232 Connections - Aveo Systems

If your serial cables are wired correctly, but the control system is still not connecting to the equipment, you can try to connect your computer directly to the ...

Serial communication with sensor not working as expected

Or if I fiddle with any small settings, or turn my sensor off then on again, sometimes I can start to get a bit of data in on the port, but it ...

6 Common Communication Problems Involving Serial Connections

If your USB to RS-232 cable does not appear in the list of available COM ports, check that the USB driver is properly installed. #5 - COM Port ...

RS-232 Troubleshooting Common serial port problems

One of the most common serial port errors that installers encounter when connecting a device to the control system is incorrect wiring. Most ...

How to solve the problem of serial port connection failure - PUSR

Solution: Install or reinstall the correct driver. 2.3 Hardware failure. If your serial port device is damaged or the cable is broken, the computer will not ...

COM ports Windows 10: fix any COM port issues in 2 easy ways

The way to resolve this issue is through the use of Windows virtual serial ports. It can be very frustrating to query your Device Manager with ...

Troubleshooting Serial Port Problems - PC Hardware in a ... - O'Reilly

If a working serial connection stops working, it's usually because someone or something changed port settings or communications parameters. Verify these first.

COM port error: basic information about serial port debug technology

When troubleshooting COM port issues, make sure that all the aforementioned settings are identical on both ends of your serial connection. If ...

How to troubleshoot serial RS232 communications - YouTube

How to confirm your PC com port, usb-rs232 adapter and serial cable are working with a loop back test.

COM ports on Win 7 PC cannot communicate with device - Hardware

Further to that, I have seen certain USB to Serial adapters have intermittent problems or not work at all and had to get a different one.

Serial Communications not working at all - XIAO - Seeed Studio Forum

I have 2 XIAOs TX to RX, RX to TX and grounds connected and can't get them to communicate via serial. SENDING XIAO CODE void setup() ...

Troubleshooting Serial Port Interface - MATLAB & Simulink

Supported Platforms · Adaptor Requirements · Configuration and Connection · Verify Port · Sending and Receiving · VISA-Serial Communication · Third-Party Software.

Problem with my rs232 serial port - Sierra Wireless Forum

With the USB port I have commanded 'AT+WOPEN = 0', verified it is 0 with 'AT+WOPEN?' and then powered off and on. I believe this should put the ...