ZHANG Zhaohong is my colleague. We want to resolve two problems.
One is the reset problem of MAXv8000, the other is the problem of Autosave.
In our experience, Autosave function can save the DVAL and DRBV fields. But
after VME reboot or power up, only the value of DVAL is restored to motor
recorder. In encoder close-loop control system, DRBV is not equal to DVAL
normally. So in my opinion, the value of DRBV should be restored to motor
recorder. Only DRBV indicates the current position of motor, because
sometimes some defaults may cause the system crush and lets DRBV and DVAL
have a large error. For example, let motor run a long distance, and suddenly
the power is lost. I have not the ability of modifying the source codes of
Autosave/Restore. So we hope EPICS experts give our some advises.
About the D6 flash (watchdog reset problem), we have got the message as Mr.
Ron Sluiter told me. Now according to Mr. Phillip Brown's answer, the MAXv
board which has 1.33 or above firmware should resolve the issue. Fortunately
there are more than ten boards from OMS in our hands, which were produced in
this year(2010) and have the 1.33 firmware. In order to certify this, I use
And get such message from IOC:
Oms MAXv motor card #0 @ 0xF0F0F000, id: MAXv-8000 ver:1.33, s/n:000870,
FPGA:B2:A6 BOOT:1.2 - Oregon Micro Systems value = 0 = 0x0
Now what we can do is replace the old board (1.31 firmware) with new one (1.
33 firmware), wait and see.
Welcome any suggestions.
Beamline Control Group
Shanghai Synchrotron Radiation Facility
Shanghai Institute of Applied Physics
Chinese Academy of Sciences
Zhangheng Rd 239,Pudong Dist.,
: Phillip Brown [mailto:firstname.lastname@example.org]
: 2010年5月11日 23:47
: Ron Sluiter; Mark Rivers; Scott Frederick
: RE: MAXv vs XPS
Yes, the description is that the MAXv is in watchdog reset. Ron is
correct that the best thing is to send the controller back on RMA for
analysis and firmware upgrade to version 1.33 or grater, which should
resolve the issue.
An RMA can be obtained by email (customer.service@Pro-Dex.com) or phone
From: Ron Sluiter [mailto:email@example.com]
Sent: Tuesday, May 11, 2010 8:30 AM
To: Mark Rivers; Scott Frederick; Phillip Brown
Cc: ???; liuping
Subject: Re: MAXv vs XPS
I have sent messages to both Zhang Zhaohong and
Liu Ping (both from the Shanghai Institute of Applied Physics,
but I don't know if these are the same or separate problem)
that flashing LED's on the MAXv indicates the board
may be experiencing the "reset problem" and that OMS has
a firmware upgrade that they hope will address this.
I suggested they RMA the MAXv board(s) back to OMS
and request a firmware upgrade to version 1.33.
There is a lot of communication going on here that
might be resolved by a simple Return Materials
Mark Rivers wrote:
> I believe it is being done with a move command, not jog.
> *From:* Scott Frederick [mailto:Scott.Frederick@pro-dex.com]
> *Sent:* Tuesday, May 11, 2010 10:00 AM
> *To:* Mark Rivers
> *Cc:* Phillip Brown; firstname.lastname@example.org
> *Subject:* Re: MAXv vs XPS
> How is the Change on the fly performed through the MAXv? JG - Jog.
> ----- Original Message -----
> From: Mark Rivers <email@example.com>
> To: Scott Frederick
> Cc: Phillip Brown; Ron Sluiter <firstname.lastname@example.org>
> Sent: Tue May 11 07:42:59 2010
> Subject: RE: MAXv vs XPS
> Hi Scott and Phil,
> There is an EPICS user in China who is having a problem with a MAXv,
> I'm trying to help. He says:
> "When the user is doing the on-the-fly energy scanning(Bragg), the
> corresponding MAXv crashes and has no any response to the input
> The GREEN LED(D6) on the MAXv board flashes with GREEN LED(D4)
> on.(Normally D6 is off and D4 is on)."
> I looked in the MAXv manual and could not find a description of the
> meaning of these LEDs. Is this documented?
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