Re: High Voltage PS with RS-232 serial port

[Eric Norum via Tech-talk <tech-talk at aps.anl.gov>]

What does

ls -l /dev/ttyS*

show?

Perhaps this is just a permission issue?

On Oct 1, 2021, at 4:33 AM, Hasan SANSAR via Tech-talk <tech-talk at aps.anl.gov> wrote:

Hi all,

We were using Glassman's HVPS with RS-232 serial port connection diretcly on CentOS 7.4 on MOXA DA-682A. And I updated CentOS to 7.9. after that MOXA PC started to not recognizing RS-232 serial connection. So, we are using High Voltage PS with TCP/IP converter  for temporary reason.

I'm getting same error in here at tech-talk discussion:
https://epics.anl.gov/tech-talk/2013/msg01079.php

> drvAsynSerialPortConfigure("L0","/dev/ttyS0",0,0,0)
> asynSetOption("L0", -1, "baud", "9600")
> setOption failed tcsetattr failed: Input/output error

How can I solve this problem and how can I connect to this device over RS-232 port again?

— 

Eric Norum

eric at norum.ca