Emerson Process Management Bristol ControlWave ExpressPAC - Manual (Page 84)

ControlWave ExpressPAC Instruction Manual (CI-ControlWave EPAC)
A core updump may be required if the ControlWave ExpressPAC
spontaneously enters a watchdog state that affects all system operation.
This occurs when the system crashes as a result of a CPU timeout
(resulting from improper software operation, a firmware glitch, and so
on). In some cases, the watchdog state can recur but you cannot
logically reproduce the conditions.
The CPU’s RAM contains “crash blocks,” a firmware function provided
specifically for watchdog troubleshooting. You can view and save the
crash blocks by viewing the Crash Block Statistic Web Page (see the
Web_BSI Manual, D5087). On request, you can forward crash block
files to our technical support personnel. If they need additional
information to evaluate the condition, the technical support group may
request a core updump. Once the core updump process generates a file,
you can forward that file to the support personnel for evaluation and
resolution.
Use the following steps to preserve the “failed state” condition at a
system crash and perform a core updump:
1.
Set switch SW2-1 on the CPU/System Controller board to OFF
(Disable Watchdog Timer). If switch SW2-4 is ON, set it to
OFF (Enable Core Updump).
Note
: The factory default setting for switch SW2-4 is OFF.
2.
Wait for the error condition (typically “NOTRUN” on the
optional display).
3.
Connect the ControlWave ExpressPAC’s Comm Port 1 to a PC
using a half duplex null modem cable.
4.
Set the ControlWave ExpressPAC for Recovery Mode by setting
both SW1-1 and SW1-2 to the right for open operation or both
to the left for closed operation.
5.
Start the PC’s HyperTerminal program (at 115.2 kbaud) and
generate a receive using the 1KX-Modem protocol. Save the
resulting core updump in a file so you can forward it later to the
technical support group.
By setting the CPU/System Controller board switches SW2-1 and SW2-
4 both off before the ControlWave ExpressPAC fails you prevent the
ExpressPAC from automatically recovering from the failure and enable
it to wait for you to take a core updump.
Once you complete the core updump, set the CPU/System Controller
board’s switch SW2-1 to ON (Watchdog Enabled) and SW2-4 to OFF
(Core Updump Enabled).
Additionally, set switch SW1-1 to OFF and SW1-2 to ON.
With these switches set, power up the ControlWave ExpressPAC and
begin standard operations.
5-16 Service & Troubleshooting Revised Mar-2011