Emerson Process Management ControlWave XFC - Manual (Page 87)

CI-ControlWave XFC Service / 3-11
3.6 CORE UPDUMP
In some cases a copy of the contents of SRAM can be uploaded to a PC for evaluation by
Bristol Inc. engineers. This upload is referred to as a ‘Core Updump.’ A Core Updump may
be required if the ControlWave XFC electronic flow meter 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 Chapter 4 of the Open BSI Technician’s Toolkit - D5087). Crash
Block files should be forwarded to Bristol Inc. for evaluation. If additional information is
required to evaluate the condition, a Core Updump may be requested by Bristol. Once the
file generated by the Core Updump has been forwarded to Bristol, it will be evaluated and
the results will be provided to the user.
Follow the four steps below to perform a Core Updump.
1. Set CPU Board Switch SW1-1 OFF (Disable Watchdog Circuit). If Switch SW1-4 is ON,
set it to OFF (Enable Core Updump). Note: The factory default setting for SW1-4 is
OFF.
2. Connect ControlWave XFC Comm. Port 1 to a PC using a special 3-wire Cable (see
Figure 2-9C).
3. Set CPU Board Switches SW1-9 and SW1-10 so that both are in either the ON position
or the OFF position or set SW1-9 ON and SW1-10 OFF.
4. Start the PC’s HyperTerminal Program (at 115.2kbaud) and generate a file using the
1KX-Modem protocol. Save the resulting Core Updump in a file to be forwarded to BBI
for evaluation.
When the Core Updump has been completed, set the CPU Board Switch SW1 as follows:
SW1-9 is in the OFF position & SW1-10 is in the ON position.
3.7 CALIBRATION CHECKS
Calibration of the MVT or GPT and the RTD are performed using OpenBSI’s TechView
Program (see document # D5131 – TechView User’s Guide).