Experimental Physics and
Industrial Control System

"Rarback, Harvey" <[email protected]> · Tue, 11 Dec 2007 14:57:30 -0800

	Motor folk,

We've experienced a problem on an updated MAXv motor controller

    Oms MAXv motor card #0 @ 0xCFFFF000, id: MAXv-8000 ver:1.30, s/n:000207, FPGA:B1:A6 BOOT:1.1 - Oregon Micro Systems

where, after power cycling the VME crate, the card would hang the IOC.  We returned the card to the vendor and Pro-Dex claimed the card had corrupted firmware and that they had never seen such a failure.  Has any else seen this happen to a MAXv?

We've also recently experienced another weird hardware event: an (expensive) TR-Electronic absolute linear encoder which was powered from an SSI VME module stopped working after power cycling the same crate.  We've subsequently checked the crate power supplies for transients and ripple while power cycling and saw nothing anomalous.

Any ideas to explain these (perhaps unrelated) failures are welcome.

                                   --Harvey
----
Harvey Rarback                        phone:      (650)926-3963
Stanford Linear Accelerator Center    fax:        (650)926-4100
2575 Sand Hill Road                   home phone: (650)560-9111
Menlo Park, CA 94025
[email protected]             http://ssrl.slac.stanford.edu/~rarback

       "Always tell the truth, that way you don't have to keep track."
                                     Pogo

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System