Isolated RS-422/485 Communications and Watchdog Card
WDG-SIO - Acces I/O Products, Inc.
This multifunction card contains a Watchdog Timer, an RS422/485 Serial Communications port, and an internal Temperature Alarm. The WDG-SIO is a full-length card that installs in “long” expansion slots of IBM PC/XT/AT and compatible computers. The following paragraphs describe functions provided by the WDG-SIO card.
