Accessory 34DD Opto-Isolated I/O Interface Board Manual

This manual provides installation, configuration, and operational instructions for the Delta Tau Accessory 34DD, a 64-bit opto-isolated I/O interface board with 20 inputs and 12 outputs. It covers connector pinouts, multiplex address mapping, DIP switch settings, M-variable assignments, power supply and opto-isolation considerations, watchdog timer configuration, and board layout schematics.