Abstract: A method is disclosed for safe communication between a communication system by way of an OFDM method between a master and a slave, the master being able to communicate via a management channel and via a payload data channel with the slave. In an embodiment, the master assigns frequency spectra to be used for the payload data channel. The master is allocated an address of the slave and the master subsequently allocates the address to one of the frequency spectra to be used for the payload data channel. The slave stores the address transferred to it in its first microcontroller and the slave stores the address received via the payload data channel in the second microcontroller. The slave then checks whether the stored addresses match.

Abstract: A method is disclosed for specifying a transmission channel within a multichannel communication system for a slave of the communication system, as well as to a device of a multichannel communication system. In at least one embodiment of the method, wherein a master can communicate with a safe slave and with a normal slave within the communication system, the transmission channel of a slave of the communication system is specified explicitly as a function of the slave type of the slave.

Abstract: An apparatus includes a communication device and an evaluation unit, wherein the communication device can be linked to a communication bus and can receive secure telegrams by way of the communication bus, and wherein a secure telegram includes user data and CRC data in each instance. In at least one embodiment, in order to improve the communication within the secure bus system, the evaluation unit can determine an error rate from received secure telegrams by way of a CRC check and if a threshold value of the error rate stored in the evaluation unit is exceeded, can effect a secure state of the apparatus.

Abstract: In a method for forming a CRC value using a plurality of data blocks, the CRC protection can be improved even further by virtue of the fact that, in order to form the CRC value, data blocks which are not transmitted to a receiver or have not been transmitted to a receiver are placed in front of data blocks which are transmitted to the receiver or have been transmitted to the receiver.

Abstract: A method is disclosed for safe communication between a communication system by way of an OFDM method between a master and a slave, the master being able to communicate via a management channel and via a payload data channel with the slave. In an embodiment, the master assigns frequency spectra to be used for the payload data channel. The master is allocated an address of the slave and the master subsequently allocates the address to one of the frequency spectra to be used for the payload data channel. The slave stores the address transferred to it in its first microcontroller and the slave stores the address received via the payload data channel in the second microcontroller. The slave then checks whether the stored addresses match.

Abstract: A method is disclosed for specifying a transmission channel within a multichannel communication system for a slave of the communication system, as well as to a device of a multichannel communication system. In at least one embodiment of the method, wherein a master can communicate with a safe slave and with a normal slave within the communication system, the transmission channel of a slave of the communication system is specified explicitly as a function of the slave type of the slave.

Abstract: An apparatus for an AS-i system with a first AS-i master is disclosed. In at least one embodiment, the apparatus includes a first and a second terminal. Within the AS-i system is a second AS-i master for a downstream AS-i slave connected to the first terminal and is an AS-i slave for the first AS-i master connected to the second terminal. The apparatus is embodied such that it represents the downstream AS-i slave connected to it via the first terminal as an AS-i slave via the second terminal.