Processor for sewing machines

Sewing processor arrangement for operational control of at least one sewing device, including auxiliary units, and for rotational speed control of a positioning drive which drives the at least one sewing device, comprising long term memory means for storing operational control characteristics and rotational speed control characteristics, digital programming means for writing into and retrieving from said long term memory means all parameters necessary for at least one sewing operation and for the rotational speed control of the position drive, said parameters including sewing machine parameter data as well as operating data, wherein the operating control and rotational speed control characteristics can be stored in said long term memory means and modified by the digital programming means during operation, said sewing processor arrangement further including an interface through which the parameters can be written into and read out from the long term memory means by said digital programming means, and a sewing machine plug or adaptor for recognizing a connected sewing device by a code word before beginning a sewing operation by sensor lines and, in case of incompatibility, for transmission of an error code for avoiding erroneous functions and preventing a start of the entire sewing operation or a specific sewing operation.