Patent ID: 8209455

Claim:
A control and data-transmission system comprising: a plurality of I/O modules ( 100 . . . 107 ) arranged in series one adjacent to the other, wherein each I/O module in the plurality of I/O modules comprises at least one I/O signal channel, as well as at least one first signal terminal for connecting the I/O signal channel to a data bus and at least one second signal terminal for connecting a bus subscriber to the I/O signal channel; and a control and/or data-transmission module ( 300 ), wherein the control and/or data-transmission module comprises control electronics for selective control of the I/O modules and is interconnected mechanically to the I/O modules and forms, with these modules, a detachable unit, and wherein the plurality of I/O modules is provided, in order to contain the control and/or data-transmission module ( 300 ).