Service Data Objects (SDOs) are parameters of an EtherCAT device. BNI IO-Link masters use the Can over EtherCAT (CoE) service here. The CoE index range 0x40n0 is reserved for the IO-Link service data. By substituting the value n the individual ports 0-7 of the IO-Link master are selected.

First the information fields must be filled (Index, Subindex, Length, Data), only then is started by setting the Control command.

Both CoE and IO-Link designate their parameters with index and subindex. The indices of the two systems must not be confused.

The values for Index, Subindex and Lenght are interpreted as decimal numbers. They can also be specified in hexadecimal. However, the representation jumps back to a decimal number afterwards.

By right-clicking on the startup parameter list, it can be imported or exported in XML format.

Parameters can be transferred to the IO-Link master via the Can over EtherCAT (CoE) service. In addition to startup parameterization (a parameter list is written down during initialization of the EtherCAT device), parameters can also be written via CoE Online during operation. The CoE Online tab is displayed and enabled in online mode via "Expert Settings".

In addition to other setting options in offline mode, the CoE Online tab appears in online mode.

The write and procedure here is the same as in the parameter list for startup parameterization.