Arrangement for transmitting data over a bus

摘要

PCT No. PCT/DE93/01098 Sec. 371 Date May 22, 1995 Sec. 102(e) Date May 22, 1995 PCT Filed Nov. 18, 1993 PCT Pub. No. WO94/12936 PCT Pub. Date Jun. 9, 1994An arrangement for transmitting data over a bus (2, 6, 7) has a central unit (1, 4, 5) which initiates data transmission and one or several peripheral units (3, 8, 9) linked to each other by the bus. In at least one of the components, besides first control lines and data lines for transmitting a data word having a first data width, further control lines and further data lines for transmitting a data word having a second data width are also provided. These are designed in such a way that components with different data bus widths can communicate with each other by transmission of data words having the smallest existent data width. In automation equipment, the invention allows any combination of components of different classes of capacity.