Re: AMI 286 Liquid Level Controller

["Tran, Phi Dung via Tech-talk" <tech-talk at aps.anl.gov>]

Hi Tynan,

My AMI 286 LLC is connected to a Moxa Switch. I discovered that by setting the Data Packing delimiter 1 hex value to 0A for Line Feed, the controller could recover after a power shutdown. Now I understand how, but I'm still uncertain about the underlying reason.

Sincerely,

Alex Tran

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From: Tynan Ford <TFord at lbl.gov>
Sent: Tuesday, April 23, 2024 1:52 PM
To: Tran, Phi Dung <ptran1 at bnl.gov>
Cc: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: Re: AMI 286 Liquid Level Controller

 

Hi Alex,

We have the AMI 136 and 186 models using the IEEE-488 GPIB option instead of RS232. With GPIB we saw similar issues and found that reboots of the Agilent E2050 GPIB ethernet gateway were needed to restore IOC communication. We tried using an ICS GPIB ethernet gateway and could not get any communication working (SRQ line wouldn't clear).

In the end we decided to use the 0-10V analog interface on the J2 connector instead of GPIB.

Best Regards,

Tynan

On Tue, Apr 23, 2024 at 5:47 AM Tran, Phi Dung via Tech-talk <tech-talk at aps.anl.gov> wrote:

Hi,

I have an IOC that operates with the controller. However, whenever there is a power outage, the controller starts flashing, and the IOC loses communication with it via RS232. To temporarily resolve this issue, I unplug the RS232 cable from the IOC and then plug it back in. This action resets the controller, and the IOC resumes proper communication.

If you have encountered a similar problem, I would appreciate any suggestions.

Thank you,

Alex Tran

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