The CPU is a 16-bit 80186-80 (80MHz). Apart from the original functions (input, output, power on value, safe value, high limit value, low limit value) of the I/O module, the firmware provides additional functions to allow I/O modules in different slots to be combined together. For example, if the channel value of an AI module is above a predefined high limit value, or below a predefined low limit value, the information can be immediately passed to another DO module to trigger alarm or light. Various software development kits (SDK) and demos are provided, such as DLL, ActiveX, Labview driver, Indusoft driver, Linux driver, OPC server, etc. Although all the SDK drivers support only COM Port interface,users can also use there SDK by installing the VxComm Utility . VxComm Utility can create Virtual COM Port to map the Ethernet Port, then the I/O modules can be easily added to the I-8KE4/I-8KE8 and can be quickly integrated into an existing system.