All 48 IO channels can be used as interrupt generators. Interrupts are programmable to be enabled, active high or low, and edge or level triggered. A 470 ohm pull-up resistor is provided on board. An external oscillator position is provided for custom situations. The registers are mapped as 16 bit words.
All registers are read-writeable.
Parallel Interface 48 independent channels. Each channel can be an input or an output. Read-back filtered or direct. Interface BCT open drain drivers with 64mA current sink or 485 transceivers Pull-up Resistor 470 standard, 1K, 4.7K available Cable interface IndustryPack standard IO Software Interface 16 bit registers mapped to the 48 IO channels. Read-back of channel control registers and input registers.