[Dsg-hallc_controls] PLC Resets

[Steve Lassiter]

Hi, 

The SHMS Q2 control net module required a power cycle on 11-14-18. 
No other control net or Ethernet modules faulted during this time. It is another data point 

Feb 06 2018 SHMS Dipole Control Net faulted result = crashed cryo to quench back at high current 
April 02 2018 SHMS HX Control Net faulted result = no adverse effects 
April 10 2018 SHMS Q2 Control Net faulted result = crashed cryo due to quench back at high current 
April 21 2018 SHMS Q1 Control Net faulted result = no adverse effects 
April 28 2018 SHMS Q3 Control Net faulted result = no adverse effects 
Nov 14 2018 SHMS Q2 Control Net faulted result = no adverse effects 

The Control net module for the SHMS HB has not faulted as of yet. 
The Ethernet modules have not faulted as of yet either. 
But, dose accumulation is building. 
I plan to power cycle all the Net modules after thanksgiving. 
Attached is a proposed work plan for that time period. Please review and comment on it. 

thanks 
Steven 



----- Original Message -----

From: "Brian Eng" <beng at jlab.org> 
To: "dsg-hallc controls" <dsg-hallc_controls at jlab.org> 
Sent: Thursday, November 15, 2018 10:27:16 AM 
Subject: [Dsg-hallc_controls] PLC Resets 

Hi Steve, 

I saw some recent log entries about power cycling the SHMS remote chassis, in particular Q2. 

Do you think this is related to ControlNet vs Ethernet? Has Q1 & HX been working okay? 
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