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

[Tyler Lemon]

Hi Mike,

It is the first, the drivers for the converters got removed somehow. It seems to happen every few updates to Windows.

It has happened enough times where its the first thing to check when the RS-485 and RS-232 converters start acting up after an update or the PC is moved.

Tyler
________________________________
From: Michael Lowry <mlowry at jlab.org>
Sent: Monday, August 10, 2020 11:26 AM
To: Xiangdong Wei <xwei at jlab.org>; Tyler Lemon <tlemon at jlab.org>; dsg-hdice at jlab.org <dsg-hdice at jlab.org>
Subject: Re: Update on NMR Rack RS-485 debug

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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