[Dsg-hallb_magnets] [New Logentry] Re: Re: PTP Time Server In Hall B

[beng at jlab.org]

Logentry Text:
--
Brent found a PTPd support ticket similar to the issues we're seeing with a fixed time offset being broadcast from the PLCs when using them as the master clock.

Adding the following option:
ptpengine:always_respect_utc_offset=Y
to
/usr/local/natinst/share/TimeSync/TimeReferences/ptp.conf
and restarting PTP allows the cRIO time to now match the PLC and Windows (see screenshot).

Unfortunately this can only be applied to Linux based cRIOs and it is modifying a config file that specifically says it is depreciated, so this is at best a temporary work-around.

The current time sychronization for the magnets looks like this:
EWEB does an SNTP request every 5 min (from site-rtr) -> sets the controller time -> broadcast PTP via EN2T -> cRIO & remote chassis receive the time.

---

This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/3592351
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/dsg-hallb_magnets/attachments/20180828/7fe7ed7d/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: PTP Time.PNG
Type: image/png
Size: 382733 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/dsg-hallb_magnets/attachments/20180828/7fe7ed7d/attachment-0001.png>