BECKHOFF EL6900-FB - Manual (Page 18)

System description
16 Function blocks for TwinSAFE logic terminals
Table 2-5: Status information for a connection
Value Description
100 (0x64) Reset state:
The reset state is used to re-initialize the Safety over EtherCAT connection after
the power-on or a Safety over EtherCAT communication error.
101 (0x65) Session state:
During the transition to or in the session state a session ID is transferred from
the Safety over EtherCAT master to the Safety over EtherCAT slave, which in
turn responds with its own session ID.
102 (0x66) Connection state:
In the connection state a connection ID is transferred from the Safety over
EtherCAT master to the Safety over EtherCAT slave.
103 (0x67) Parameter state:
In the parameter state safe communication- and device-specific application
parameters are transferred.
104 (0x68) Data state:
In the data state Safety over EtherCAT cycles are transferred until either a
communication error occurs or a Safety over EtherCAT node is stopped locally.
105 (0x69) Shutdown state:
In the shutdown state the connection was shut down by one of the
communication partners.
Further information can be found in the Safety over EtherCAT specification.