About HYDAC - Intelligent Machine Dynamics Lab

What Are Field-Bus Systems?A field-bus system is a data network with the objective to receive data from a production process, exchange data betweendevices or machines, control steps or processes in production. Data transmission happens serially with digital signals(equivalent to Internet data transmission.)The most basic design of such a data network is a 2-wire cable with various individual sensors (e.g. Pressure transmitters),actors (e.g. solenoid valves), controllers, periphery units, and control units (e.g. PLC, industrial PCs) connected at any point.BUS participants need a suitable interface, which transfers flow of data. Each individual component gets its own address.Structure of a Bus System:Bus mastere.g. PLCNode 1Node 2 Node 3 Node 30 Node 31e.g. pressuretransmittere.g. valvee.g. temperaturesensorRemarks: Communication of process data is performed by means of every individual sensor, component, and so on,being connected via it’s own wiring to high layer control.Advantages:• Easy wiring with clear reduction of cabling (best case: only two cables)• Clear structure• Diagnostic functions, connected units may be checked on functionality• All system functions are available in high layer control at any time• High level of transmission safety, information may be checked on validity through multiple transmissions• Easy to be enlarged, since at any place of network a unit may be added• Easy implementation into higher leveled systems:- connection to other bus system- distance diagnostic systems- service units1-877-GO HYDACElectronics Catalog 12