Connection reason bit mask that is sent to the host as soon as a connection is established. 
| Enumerator | 
|---|
| brp_Eth_OpenTcpConnection_ConnectionReason_Powerup  | This is the first connection after powerup.  
 | 
| brp_Eth_OpenTcpConnection_ConnectionReason_LinkChange  | There has been a Link Change event.  
 | 
| brp_Eth_OpenTcpConnection_ConnectionReason_SessionkeyTimeout  | The current PKI session is timing/has timed out.  
Restart PKI authentication.  
 | 
| brp_Eth_OpenTcpConnection_ConnectionReason_Message  | Autoread has detected a new card.  
The card number can be retrieved with AR.GetMessage.  
 | 
| brp_Eth_OpenTcpConnection_ConnectionReason_UdpIntrospection  | This is a UDP introspection induced connection trial.  
Open a PKI session, configure the device with the connection parameters of the host and restart the device afterwards.  
 | 
| brp_Eth_OpenTcpConnection_ConnectionReason_Reset  | There has been a software reset.  
 | 
| brp_Eth_OpenTcpConnection_ConnectionReason_FailedConnectionTrials  | There have been one or more connection trial failures before.  
 | 
| brp_Eth_OpenTcpConnection_ConnectionReason_undefined  |  |