Mailbox Auto Response

For some terminals there are startup commands on the master side, which have to be sent to the terminal during each EtherCAT startup (typically from PreOP after SaveOP).

Example EL6224 (IO-Link):

These startup commands must be answered by the EtherCAT simulator, to ensure that the EtherCAT master starts up correctly. The EtherCAT simulation device behaves accordingly, i.e. startup parameters are answered automatically between PreOp and SafeOp, without the need for intervention in the application.

In cases where these parameter are required anyhow, the option “Auto Respond Mailbox” can be disabled (see figure below). If this option is disabled, the queries have to be processed in the application program as required, to ensure that the master starts up correctly.