[ayeckley]

Update:

Since we are snowed-out from the school today, the most productive thing I could do was to connect to the cRIO RS-232 console and look for error messages. I've attached the dialog below per Greg's suggestion. I'm not seeing anything that would suggest any problems on the cRIO side (as mostly expected):

cRIO-907x Boot

Copyright 2007 National Instruments Corp.

Bootrom version: 2.4.7
Creation date: Jul 9 2007, 00:45:07

Press any key to stop auto-boot...
1
0

auto-booting...

boot device : tffs=0,0
unit number : 0
processor number : 0
host name : host
file name : /c/ni-rt/system/vxWorks
flags (f) : 0x8

Mounting tffs...
Attaching to TFFS... Datalight Reliance v3.00.1218T
VxWorks Edition for ppc603
Copyright (c) 2003-2007 Datalight, Inc.
done.
3572144
Starting at 0x100000...

ATA device not detected.

Adding 8459 symbols for standalone.
Mounting onboard storage...
Reliance File System Driver
Datalight Reliance v3.2.2 Build 1376BV
VxWorks Edition for ppc603
Copyright (c) 2003-2008 Datalight, Inc. All Rights Reserved Worldwide.

-> lvusEngine: PPC603 CPU detected...
CPU tick frequency: 33.000652 MHz [Using: 1000 MHz]
MAX system identification name: FRC-cRIO-2252
Initializing network...
Device 1 - MAC addr: 00:80:2F:11:42:32 - 10.22.52.2 /8 (primary - static)
Device 2 - MAC addr: 00:80:2F:11:42:33 - 192.168.0.3 /24 (static)

Loading LVRT...
* Loading EarlyStartupLibraries: tsengine
Time sync source: rtc now active
* Loading StartupDlls: NiRioRpc
* Loading StartupDlls: niorbs
* Loading StartupDlls: NiViSrvr
* Loading StartupDlls: nivissvc
NI-RIO Server 3.2 started successfully.
* Loading StartupDlls: nivision
* Loading StartupDlls: niserial
* Loading StartupDlls: FRC_FPGA
* Loading StartupDlls: FRC_NetworkCommunication
FRC_NetworkCommunication was compiled from SVN revision 2064
FPGA Hardware GUID: 0xAD9A5591CC64E4DF756D77D1B57A549E
FPGA Software GUID: 0xAD9A5591CC64E4DF756D77D1B57A549E
FPGA Hardware Version: 2010
FPGA Software Version: 2010
FPGA Hardware Revision: 1.3.0
FPGA Software Revision: 1.3.0

Welcome to LabVIEW Real-Time 8.6.1f2

NI-VISA Server 4.5 started successfully.

[At this point the DS will start losing its connection, with no futher messages generated by the cRIO on the console.]

If the system watchdog were timing out, would we be getting the same "hard" reboot dialog from the console? Or is it some sort of soft-reboot?