<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: arial,helvetica,sans-serif; font-size: 10pt; color: #000000'>Hi,<br><br> Yes.....<br>Missing a 4slot chassis. <br>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.<br><br>Jack .. do you know the where the missing 4 slot or 10 slot chassis could be?<br><br>Steven<br><br><hr id="zwchr"><div style="color: rgb(0, 0, 0); font-weight: normal; font-style: normal; text-decoration: none; font-family: Helvetica,Arial,sans-serif; font-size: 12pt;"><b>From: </b>"Brian Eng" <beng@jlab.org><br><b>To: </b>"Steve Lassiter" <lassiter@jlab.org><br><b>Cc: </b>"dsg-hallc controls" <dsg-hallc_controls@jlab.org><br><b>Sent: </b>Thursday, June 7, 2018 12:03:06 PM<br><b>Subject: </b>Re: [Dsg-hallc_controls] Plan to test Ethernet VS Controlnet<br><br>Does Hall C have the equipment to do that sort of test or is that something that will need to be purchased?<br><br>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.<br><br>----- Original Message -----<br>> From: "Steve Lassiter" <lassiter@jlab.org><br>> To: "Brian Eng" <beng@jlab.org><br>> Sent: Thursday, June 7, 2018 11:58:45 AM<br>> Subject: Re: [Dsg-hallc_controls] Plan to test Ethernet VS Controlnet<br><br>> Hi,<br>> <br>> The standalone PLC is currently configured with an extra I/O chassis using<br>> control-net. I suggest adding a third chassis, setup with control-net<br>> initially. Write some code that uses I/O from all chassis. Then use this setup<br>> to replace one of the control-net modules with an Ethernet module and run the<br>> standalone with a mixture of control-net to one external chassis and Ethernet<br>> to the other chassis. Also, work out the procedure to back out of the Ethernet<br>> install and replace with the Control-net module, if needed.<br>> Use this to proof, debug, and do a performance comparison as well as set up a<br>> work procedure for the task that will be needed down in the hall.<br>> Then take the Ethernet module(s) and replace one or two of the control-net in<br>> the SHMS hut and run in this configuration for the fall run. (no idea which<br>> control net module will fail next as they have all failed only once each).<br>> <br>> Trying to minimize the amount of down time for the effected SHMS I/O chassis and<br>> the PLC (thus all SHMS magnets) and have a recovery plan in place in case it<br>> doesn't go well.<br>> <br>> I am looking for proof that the multiple network cards can operate the I/O<br>> chassis simultaneously and with the nearly the same performance.<br>> <br>> Steven<br>> ----- Original Message -----<br>> <br>> From: "Brian Eng" <beng@jlab.org><br>> To: "Steve Lassiter" <lassiter@jlab.org><br>> Cc: "Pablo Campero" <campero@jlab.org>, "dsg-hallc controls"<br>> <dsg-hallc_controls@jlab.org><br>> Sent: Thursday, June 7, 2018 11:36:21 AM<br>> Subject: Re: [Dsg-hallc_controls] Plan to test Ethernet VS Controlnet<br>> <br>> Hi Steve,<br>> <br>> It's not clear to me what additional procedure you'd like to have other than<br>> what Pablo included in his initial email.<br>> <br>> Unfortunately there isn't going to be anyway to to test this on the stand-alone<br>> PLC as it doesn't communicate with any of the other PLCs via ControlNet.<br>> <br>> No matter what the SHMS PLC will need to go offline to change the module out,<br>> that part is unavoidable.<br>> <br>> Also, I don't know if we can call whatever test we do successful until after the<br>> PLC is run during beam-on conditions. Since I think everyone is assuming it is<br>> radiation related that is causing the problems?<br>> <br>> --<br>> Brian Eng<br>> Detector Support Group<br>> 757-269-6018<br>> <br>>> On Jun 7, 2018, at 11:15 AM, Steve Lassiter <lassiter@jlab.org> wrote:<br>>> <br>>> Hi,<br>>> <br>>> Testing, debugging and procedure writeup has to bedone on the standalone unit<br>>> before applying to the SHMS PLC.<br>>> <br>>> Steven<br>>> <br>>> From: "Pablo Campero" <campero@jlab.org><br>>> To: "dsg-hallc controls" <dsg-hallc_controls@jlab.org><br>>> Sent: Thursday, June 7, 2018 11:11:37 AM<br>>> Subject: [Dsg-hallc_controls] Plan to test Ethernet VS Controlnet<br>>> <br>>> Hello Jack, Steve and Mike,<br>>> <br>>> With regards to task #2 of the PLC Tasks list (PLC - Test Ethernet vs ControlNet<br>>> interface), DSG suggests the swapping of the recent faulted PLC 1756-CN2/B<br>>> ControlNet by a 1756-EN2T Ethernet module.<br>>> Faulted ControlNet PLC module is located in the SHMS HX PLC chassis at the Q1<br>>> rack. This ControlNet PLC module is the one that has presented the most recent<br>>> communication issues according to the logbook entries.<br>>> EN2T Ethernet module that is being used now in the Standalone PLC chassis (TED<br>>> building) can be used for this test; or maybe a new EN2T module, which has an<br>>> approximate cost of $ 2550 can be ordered.<br>>> <br>>> For the test, the plan would be as follow:<br>>> • Assign new IP address for the EN2T module on the Hall C subnet.<br>>> • Swap ControlNet module by EN2T module.<br>>> • Run/Install Ethernet cable from the EN2T PLC module to available port at Hall<br>>> C subnet switch.<br>>> • Modify and configure SHMS PLC program (.ACD file). This action will require<br>>> SHMS PLC go off line, since the addition of the EN2T hardware module to the PLC<br>>> project only can be made off-line.<br>>> • Upload changes in the SHMS PLC program.<br>>> • Test communications and proper I/O data transfer from HX PLC chassis to SHMS<br>>> PLC controller chassis.<br>>> Changes and configurations in the PLC program would not take much longer than 20<br>>> min.<br>>> To perform a complete test and verify if the radiation has less affection over<br>>> the 1756-EN2T PLC module, will be required wait until the next beam run period.<br>>> <br>>> Best Regards,<br>> > Pablo<br></div><br></div></body></html>