- Emerson Remote Terminal Unit Instruction Manual

CI-ControlWave Express Service / 3-15
1. Set CPU/System Controller Board Switch SW2-1 OFF (Disable Watchdog Timer). If
Switch SW2-4 is ON, set it to OFF (Enable Core Updump). Note: The factory default
setting for SW2-4 is OFF.
2. Wait for the error condition (typically 3F on CPU/System Controller Board Status LEDs
or NOTRUN on optional LCD Display).
3. Connect ControlWave Express Comm. Port 1 to a PC using a half-duplex Null Modem
Cable (see Figures 2-5A).
4. Set CPU/System Controller Board Switch (SW1- Recovery) so that SW1-1 and SW1-2
are both in either the ON position or the OFF position.
5. 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 for
evaluation.
When the Core Updump has been completed, set the CPU/System Controller Board’s
Recovery Switch as follows: SW1-1 is in the OFF position & SW1-2 is in the ON position.
3.7 CALIBRATION CHECKS
Calibration of the RTD is performed using OpenBSI’s TechView program (see document #
D5131 - TechView User’s Guide).
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