[dsg-hdice] Update on NMR Rack RS-485 debug

[Michael Lowry]

Could you clarify if the problem was driver software damage or serial port number randomization on power up due to power on race conditions?
The later is a continual problem with Windows and usually solved by repeated restarts (not power ups) which results in stable port numbers.

Mike Lowry



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From: dsg-hdice <dsg-hdice-bounces at jlab.org> on behalf of Xiangdong Wei <xwei at jlab.org>
Sent: Monday, August 10, 2020 11:14 AM
To: Tyler Lemon <tlemon at jlab.org>; dsg-hdice at jlab.org <dsg-hdice at jlab.org>
Subject: Re: [dsg-hdice] Update on NMR Rack RS-485 debug

Tyler,

Thanks to find out. That’s exactly the issue I have with the computer department, which pushes partially updates in and claims it’s harmless. The fix was always ignored a year later.

Please please let me know when you finish the driver update.

Thanks,

Xiangdong
________________________________
From: dsg-hdice <dsg-hdice-bounces at jlab.org> on behalf of Tyler Lemon <tlemon at jlab.org>
Sent: Monday, August 10, 2020 10:53 AM
To: dsg-hdice at jlab.org <dsg-hdice at jlab.org>
Subject: [dsg-hdice] Update on NMR Rack RS-485 debug

Hi Xiangdong,

I repaired the NI-Serial driver and was able to at least see the RS-485 and RS-232 converters on the PC. I am now updating the NI-Serial driver to see if that fixes everything.

I remember in the past that this has happened before when the PC reboots or is updated. A similar situation probably happened in this instance.

-Tyler
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