Abstract: A metal connection plate of a chain link of an energy chain, which metal connecting plate has two ends, wherein one end has first elements and the other end has second elements, wherein the first elements can be inserted into the second elements of a further connecting plate in such a way that the connecting plates are rotatably connected to each other. The first and second elements are each formed by a hole having a border. The borders form stop surfaces corresponding to each other, which stop surfaces protrude substantially perpendicularly to an extent to the connecting plate.

Abstract: A metal connection plate of a chain link of an energy chain, which metal connecting plate has two ends, wherein one end has first elements and the other end has second elements, wherein the first elements can be inserted into the second elements of a further connecting plate in such a way that the connecting plates are rotatably connected to each other. The first and second elements are each formed by a hole having a border. The borders form stop surfaces corresponding to each other, which stop surfaces protrude substantially perpendicularly to an extent to the connecting plate.

Abstract: A serial transmission of data takes place on a bus (10) which has at least one forward line (8) and one return line (9) and is connected to a plurality of slaves (S1, S2, . . . ) and via whose forward line (8) successive data frames (R1, R2, . . . ) for successive slaves (S1, S2, . . . ) are transmitted. Each slave (S1, S2, . . . ) gates out, in the process, from the forward line (8) the data frame (R1, R2, . . . ) which is provided for it, and diverts said data frame (R1, R2, . . . ) directly to the return line (9) after processing. The transmission of data can therefore be carried out very quickly and with a high response speed.