The DIO-3232RL-PE model is an interface board (negative-common type) that is PCI Express bus-compliant and used to provide a digital signal function to PCs. It features 32 optocoupler isolated outputs and 32 optocoupler isolated inputs. The 32 input signals can be used as interrupt inputs.
To prevent incorrect recognition of the input signals, a digital filter function is provided with this interface board. An output transistor circuit is also provided for over-current and surge voltage protection.