Re: Configuration of the RGA200 communication baud rate

["Hu, Yong via Tech-talk" <tech-talk at aps.anl.gov>]

Hi Feng,

I do not have RGA200 for testing. However, my smart friend ChatGPT who tells me what might be wrong: https://chatgpt.com/share/6964f019-a640-8002-b03b-6262d70a36a7

The moral of this message (which might seem debatable): always ask ChatGPT, Gemini, or whatever similar tools available to your region; They are definitely smarter than most of us (at least they are much smarter than me).

Cheers,

Yong

From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of LONG FENG via Tech-talk <tech-talk at aps.anl.gov>
Date: Monday, January 12, 2026 at 12:30 AM
To: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: Configuration of the RGA200 communication baud rate

Hi all,

We encountered an issue while configuring the communication baud rate for the RGA200. As you know, the RGA uses a baud rate of 28,800, but EPICS does not seem to allow setting this baud rate. As a result, it reports the following error:  

drvAsynSerialPortConfigure ("RGA200", "/dev/ttyUSB0")
asynSetOption("RGA200", 0, "baud", "28800")
setOption failed Unsupported data rate (28800 baud)

How should this issue be resolved?

Feng