Emerson ControlWave User Manual

ControlWave Instruction Manual (CI-ControlWave)
cases, the watchdog state can recur but you cannot logically reproduce
the conditions.
The CPU module’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 SW1-1 on the CPU module to OFF (Disable
Watchdog Timer). Set switch SW1-4 to OFF (Enable Core
Updump).
2. Wait for the error condition (typically FF on the Port 80
display).
3. Connect the ControlWave Comm Port 1 to a PC using a null
modem cable.
4. Operate the Run/Remote/Local switch as follows:
Note: You must perform each step in less that one second.
a. Set Run/Remote/Local switch to Run
b. Set Run/Remote/Local switch to Remote
c. Set Run/Remote/Local switch to Local
d. Set Run/Remote/Local switch back to Remote
e. Set Run/Remote/Local switch back to Local
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 module switches SW1-1 and SW1-4 both off before
the ControlWave fails, you prevent the ControlWave 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 module’s switch
SW1-1 to ON (Watchdog Enabled) and SW1-4 to ON (Normal Run).
With these switches set, power up the ControlWave and recommence
standard operations.
When the “active” unit of a ControlWave Redundant Controller fails, it
does not recover but forces the watchdog relay so the “standby” unit
Revised Nov-2010 Service & Troubleshooting 5-33

Emerson ControlWave Specifications

General

Brand	Emerson
Model	ControlWave
Category	I/O Systems
Language	English