[Dsg-hallc_controls] Plan to test Ethernet VS Controlnet

Jack Segal segal at jlab.org
Thu Jun 7 13:55:44 EDT 2018 

No, I do not know.

On 6/7/2018 1:16 PM, Steve Lassiter wrote:
> Hi,
> 
>   Yes.....
> Missing a 4slot chassis.
> Have Chassis PSU, control net module, ethernet module and assortment of of I/O modules. Units have been placed on the work bemch 
> next to the standalone rack in TED 1544.  Door is unlock.
> 
> Jack .. do you know the where the missing 4 slot or 10 slot chassis could be?
> 
> Steven
> 
> ------------------------------------------------------------------------------------------------------------------------------------
> *From: *"Brian Eng" <beng at jlab.org>
> *To: *"Steve Lassiter" <lassiter at jlab.org>
> *Cc: *"dsg-hallc controls" <dsg-hallc_controls at jlab.org>
> *Sent: *Thursday, June 7, 2018 12:03:06 PM
> *Subject: *Re: [Dsg-hallc_controls] Plan to test Ethernet VS Controlnet
> 
> Does Hall C have the equipment to do that sort of test or is that something that will need to be purchased?
> 
> Again, I'm not sure what that will tell us since we won't be able to duplicate the setup in the Hall short of buying a complete 
> duplicate of every chassis/module. So the bandwith used by the test-stand won't be able to duplicate the actual PLC.
> 
> ----- Original Message -----
>  > From: "Steve Lassiter" <lassiter at jlab.org>
>  > To: "Brian Eng" <beng at jlab.org>
>  > Sent: Thursday, June 7, 2018 11:58:45 AM
>  > Subject: Re: [Dsg-hallc_controls] Plan to test Ethernet VS Controlnet
> 
>  > Hi,
>  >
>  > The standalone PLC is currently configured with an extra I/O chassis using
>  > control-net. I suggest adding a third chassis, setup with control-net
>  > initially. Write some code that uses I/O from all chassis. Then use this setup
>  > to replace one of the control-net modules with an Ethernet module and run the
>  > standalone with a mixture of control-net to one external chassis and Ethernet
>  > to the other chassis. Also, work out the procedure to back out of the Ethernet
>  > install and replace with the Control-net module, if needed.
>  > Use this to proof, debug, and do a performance comparison as well as set up a
>  > work procedure for the task that will be needed down in the hall.
>  > Then take the Ethernet module(s) and replace one or two of the control-net in
>  > the SHMS hut and run in this configuration for the fall run. (no idea which
>  > control net module will fail next as they have all failed only once each).
>  >
>  > Trying to minimize the amount of down time for the effected SHMS I/O chassis and
>  > the PLC (thus all SHMS magnets) and have a recovery plan in place in case it
>  > doesn't go well.
>  >
>  > I am looking for proof that the multiple network cards can operate the I/O
>  > chassis simultaneously and with the nearly the same performance.
>  >
>  > Steven
>  > ----- Original Message -----
>  >
>  > From: "Brian Eng" <beng at jlab.org>
>  > To: "Steve Lassiter" <lassiter at jlab.org>
>  > Cc: "Pablo Campero" <campero at jlab.org>, "dsg-hallc controls"
>  > <dsg-hallc_controls at jlab.org>
>  > Sent: Thursday, June 7, 2018 11:36:21 AM
>  > Subject: Re: [Dsg-hallc_controls] Plan to test Ethernet VS Controlnet
>  >
>  > Hi Steve,
>  >
>  > It's not clear to me what additional procedure you'd like to have other than
>  > what Pablo included in his initial email.
>  >
>  > Unfortunately there isn't going to be anyway to to test this on the stand-alone
>  > PLC as it doesn't communicate with any of the other PLCs via ControlNet.
>  >
>  > No matter what the SHMS PLC will need to go offline to change the module out,
>  > that part is unavoidable.
>  >
>  > Also, I don't know if we can call whatever test we do successful until after the
>  > PLC is run during beam-on conditions. Since I think everyone is assuming it is
>  > radiation related that is causing the problems?
>  >
>  > --
>  > Brian Eng
>  > Detector Support Group
>  > 757-269-6018
>  >
>  >> On Jun 7, 2018, at 11:15 AM, Steve Lassiter <lassiter at jlab.org> wrote:
>  >>
>  >> Hi,
>  >>
>  >> Testing, debugging and procedure writeup has to bedone on the standalone unit
>  >> before applying to the SHMS PLC.
>  >>
>  >> Steven
>  >>
>  >> From: "Pablo Campero" <campero at jlab.org>
>  >> To: "dsg-hallc controls" <dsg-hallc_controls at jlab.org>
>  >> Sent: Thursday, June 7, 2018 11:11:37 AM
>  >> Subject: [Dsg-hallc_controls] Plan to test Ethernet VS Controlnet
>  >>
>  >> Hello Jack, Steve and Mike,
>  >>
>  >> With regards to task #2 of the PLC Tasks list (PLC - Test Ethernet vs ControlNet
>  >> interface), DSG suggests the swapping of the recent faulted PLC 1756-CN2/B
>  >> ControlNet by a 1756-EN2T Ethernet module.
>  >> Faulted ControlNet PLC module is located in the SHMS HX PLC chassis at the Q1
>  >> rack. This ControlNet PLC module is the one that has presented the most recent
>  >> communication issues according to the logbook entries.
>  >> EN2T Ethernet module that is being used now in the Standalone PLC chassis (TED
>  >> building) can be used for this test; or maybe a new EN2T module, which has an
>  >> approximate cost of $ 2550 can be ordered.
>  >>
>  >> For the test, the plan would be as follow:
>  >> • Assign new IP address for the EN2T module on the Hall C subnet.
>  >> • Swap ControlNet module by EN2T module.
>  >> • Run/Install Ethernet cable from the EN2T PLC module to available port at Hall
>  >> C subnet switch.
>  >> • Modify and configure SHMS PLC program (.ACD file). This action will require
>  >> SHMS PLC go off line, since the addition of the EN2T hardware module to the PLC
>  >> project only can be made off-line.
>  >> • Upload changes in the SHMS PLC program.
>  >> • Test communications and proper I/O data transfer from HX PLC chassis to SHMS
>  >> PLC controller chassis.
>  >> Changes and configurations in the PLC program would not take much longer than 20
>  >> min.
>  >> To perform a complete test and verify if the radiation has less affection over
>  >> the 1756-EN2T PLC module, will be required wait until the next beam run period.
>  >>
>  >> Best Regards,
>  > > Pablo
> 
> 
> 
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-- 
John(Jack) Segal
Halls A and C Spectrometer Support Manager
Thomas Jefferson National Accelerator Facility
12000 Jefferson Avenue
Suite 12
Newport News, VA 23606-4486
Phone: (757) 269-7242
Cell: (757) 320-9977

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