Modbus RTU - CRC delay

Question

Modbus RTU - CRC delay

Ababuy78 opened this issue a year ago · 5 comments

Ababuy78 commented a year ago

I am observing a 500ms delay between any read command (FC1, FC2, FC3 or FC4) and its respective CRC.

Is this behaviour expected? It seems odd.

Answer 1 · 2024-02-05T08:42:14.000Z

hi, thank you for the issue, can you find more information and fix if needed ?

Answer 2 · 2024-02-05T09:25:51.000Z

I could try, but I am not proficient at javascript so it would require an unnecessary large amount of time to immerse my self on this project to find the issue and correct it.
I would prefer if someone familiarized with the project to correct this issue. Is that ok?

Answer 3 · 2024-02-05T09:31:28.000Z

Sure, I added a "help wanted" label, It will let people know that can look at this issue and comment if they have more information, or find a fix.

thank you again for noticing this issue and reporting it 💚

Answer 4 · 2024-04-09T06:57:11.000Z

HI, I want check a question
Are you using modbus-serial self-host a ModbusRTU Slave?

Answer 5 · 2024-04-09T07:04:27.000Z

Hello!
No, I was using an external emulator.
As I could not see any problem with the modbus-serial library I connected directly to a PLC and the problem was solved.
It seems that the issue was using the same machine to test everything with a serial port emulator in the middle.
I believe this issue can be closed.
Thank you!