Controller PROFIBUS Slave. The PROFIBUS DP/V1 Controller combines control functionality, I/O interface and field bus in one device. Application programming is IEC 61131-3 compliant. The programmer can access all field bus and I/O data. Decentralized control to optimize support for a PLC or PC. Divide complex applications into individually testable units. Programmable fault response in the event of field bus failure. Signal pre-processing to reduce field bus transmissions. Directly control peripheral equipment for faster system response times. Stand-alone, compact controller.