Experimental Physics and
Industrial Control System

Ron Sluiter <[email protected]> · Thu, 22 Apr 2010 10:32:04 -0500

Hello Michael,
This is a known, ill defined, problem.  It appears to be a rare,
intermittent, hardware issue.
At least one MAXv board, with the same symptoms you describe,
has been returned to OMS that I know of.  I believe OMS is
beginning to understand what is causing this problem.
I would RMA the board back to OMS and tell them you are
having watchdog problems.  Have them contact me if they
have any further questions.
Ron
Davidsaver, Michael wrote:

All,
We are seeing a problem with one MAXv motor controller in a crate with 6
controllers running the version 6.4.3 of the motor support with Base
3.14.10 on RTEMS 4.9.3.  The symptoms I see are that the IOC becomes
unresponsive.  After a soft reboot of the CPU I see the following on the
console
MAXv card #3 is NOT running; status = 0x2
This message is printing the firmware state register, which is
indicating that the processor on the maxv card is still
(re)initializing.
The IOC then hangs waiting for a reply from the card in motor_init.  I
can attach with a remote debugger and see that it is stuck in a loop
waiting for the card to update a register.  A full power cycle seems to
bring the card back to life, but the problem has recurred several times
in recent weeks.
Is this a known issue with a fix?  We do have a spare, so I am inclined
just to return this one to the manufacturer.

Michael Davidsaver
NSLSII Controls Group
Brookhaven National Lab
(631)344-3698

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System