SRDO allow for a safe transmission of process data just as PDO do. To
fulfill safety requirements, SRDO have special features and
transmission behavior. A SRDO consist of two CAN messages (redundancy),
which are transmitted cyclically, with inverted data content, different
CAN-identifier and a strict transmission timing. On consumer side, SRDO
are monitored and checked towards their transmission timing,
sequence-order and data consistency.
The SRDO add-on module includes a special plug-in for the CANopen
Device Monitor (part of the CANopen Configuration Suite), which provides
an interface for consistent configuration of Safety Relevant Data
Objects of a CANopen device.