The USB interface module EXDUL-317E is designed as an input unit and output unit with electrical isolation. It has 10 digital inputs and eight digital outputs with electrical isolation via high-quality optocouplers and additional protective diodes. All input optocouplers are equipped with an integrated Schmitt trigger function. Special, high-performance optocouplers can handle a switching current of up to 150 mA. Two of the 10 optocoupler inputs can also be programmed and used as counter inputs if required. A programmable LCD display enables the display of user-specific data during commissioning and the display of I / O status information during operation. The PC connection is simple and uncomplicated plug &Play through a USB interface. The module is supplied with the necessary operating voltage via the USB port or an external voltage source. The connections for the external power supply, like the connections for the input and output optocouplers, are fed to a 24-pin screw terminal strip. The compact housing allows it to be used as a mobile module on the notebook or as a control module with simple assembly on DIN EN mounting rails in control and mechanical engineering.The compact housing allows it to be used as a mobile module on the notebook or as a control module with simple assembly on DIN EN mounting rails in control and mechanical engineering.The compact housing allows it to be used as a mobile module on the notebook or as a control module with simple assembly on DIN EN mounting rails in control and mechanical engineering.