Many gateway I/O units are available. Choose between PROFIBUS-DP, DeviceNet, USB and the Ethernet dialects EtherNet/IP, Modbus TCP and PROFINET IO. The gateways have 16 digital inputs, the USB modul has 8 additional outputs. The USB is connected to the PC via a USB port, it operates at every USB port after the driver has been installed. Implementation via the simple Modbus standard protocol is possible.