B&B Electronics TPC-1261H user manual Appendix B Watchdog Timer Programming, Overview

Appendix B Watchdog Timer

Programming

B.1 Overview

The TPC-1261H watchdog timer can be used to monitor system software operation and take corrective action if the software fails to function after the programmed period. This section describes the operation of the watchdog timer, and how to program it.

The watchdog timer is built into the super I/O controller W83627HF. It provides the following functions for user programming:

•Can be enabled and disabled by user's program.

•Timer can be set from 1 to 255 seconds or 1 to 255 minutes.

•Generates an interrupt or resets signal if the software fails to reset the timer after time-out.

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