CAN in Automation (CiA) is the international usersï¿½ and manufacturersï¿½ organization that develops and supports CAN-based higher-layer protocols. All activities are based on CiA membersï¿½ interest, participation and initiative. CiA representatives actively support international standardization of CAN protocols and represent the membersï¿½ interest in national and international standardization committees, such as ISO and IEC. CiA members initiate and develop specifications that are then published as CiA standards. These specifications cover physical layer definitions as well as application layer and device profile descriptions.