Method for operating safety control and automation network having such safety control

A method for operating safety control in an automation network having a master subscriber which carries out the safety control, at least one first slave subscriber which is assigned a first safety integrity level, and at least one second slave subscriber which is assigned a second safety integrity level, the first safety integrity level and the second safety integrity level differing,

• the master subscriber, the first slave subscriber and the second slave subscriber being connected to one another via a data transmission path and each having a safety layer and a data link layer,
• the safety layer using a safety code determination method to determine, in a transmission mode, a safety code for a safety data block to be transmitted, and the data link layer forming a data packet containing the safety data block and the safety code for transmission on the data transmission path, and
• the data link layer extracting a safety data block and an associated safety code from a data packet received via the data transmission path in a reception mode, and the safety layer verifying the safety code for the safety data block using the safety code determination method,
• a first safety code determination method being assigned to the first slave subscriber and a second safety code determination method being assigned to the second slave subscriber,
• the first safety code determination method and the second safety code determination method differing, and
• the master subscriber and the first slave subscriber using the first safety code determination method for interchanging a safety data block, and the master subscriber and the second slave subscriber using the second safety code determination method for interchanging a safety data block.

An automation network having a master subscriber which carries out safety control, at least one first slave subscriber which is assigned a first safety integrity level, and at least one second slave subscriber which is assigned a second safety integrity level, the first safety integrity level and the second safety integrity level differing,

• the master subscriber, the first slave subscriber and the second slave subscriber being connected to one another via a data transmission path and each having a safety layer and a data link layer,
• a first safety code determination method being assigned to the first slave subscriber and a second safety code determination method being assigned to the second slave subscriber,
• the first safety code determination method and the second safety code determination method differing, and
• the master subscriber and the first slave subscriber using the first safety code determination method for interchanging a safety data block, and the master subscriber and the second slave subscriber using the second safety code determination method for interchanging a safety data block.