Patent ID: 7539215

Claim:
A subscriber for a communication system for transmitting and receiving data telegrams, wherein each of the data telegrams has reference data and an identifier, wherein a control of transmitting and receiving the data telegrams is based on check data records, the subscriber comprising: a transmission list, which includes a first number of the check data records, where each of the check data records has an address identifying a memory location that stores the reference data that is to be placed in a respective data telegram and the identifier which uniquely identifies the respective one data telegram of the data telegrams that is assigned to the respective one of the check data records; a circuit unit configured to generate one of the data telegrams to be transmitted, based on one of the first number of check data records in the transmission list; a second number of the check data records provided for reception separate from the first number of check data records provided for transmission; an assignment unit configured to assign a received data telegram to one of the second number of the check data records, wherein the assignment is based on the identifier of the received data telegram, wherein check data records of the second number of the check data records are stored in groups, wherein access to a check data record is effected by an index, and wherein a group of the check data record is determined based on the identifier of the received data telegram.