- Emerson Remote Terminal Unit Instruction Manual

3-14 / Service CI-ControlWave Express
Figure 3-10 - WINDIAG’s Communications Diagnostic Menu
3.6 CORE UPDUMP
In some cases a copy of the contents of SRAM and SDRAM can be uploaded to a PC for
evaluation by Emerson Remote Automation Solutions division engineers. This upload is
referred to as a ‘Core Updump.’ A Core Updump may be required if the ControlWave
Express repeatedly enters a ‘Watchdog State’ thus ill-effecting system operation. A
Watchdog State is entered when the system crashes, i.e., a CPU timeout occurs due to
improper software operation, a firmware glitch, etc. In some cases the Watchdog State may
reoccur but may not be logically reproduced.
‘Crash Blocks’ (a function of firmware provided for watchdog troubleshooting) are stored in
CPU RAM. The user can view and save the ‘Crash Blocks’ by viewing the Crash Block
Statistic Web Page (see the Web_BSI Manual - D5087). Crash Block files should be
forwarded to Emerson support personnel for evaluation.
Follow the five steps below to perform a Core Updump.
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