IEC 62394:2013 specifies requirements for service diagnostic software to be implemented in products that incorporate a digital interface. It does not specify requirements for carrying out remote diagnosis or for manufacturer-dependent software. It is based upon the ECHONET specification version 2.11, ECHONET Lite specification version 1.01 and APPENDIX Detailed Requirements for ECHONET Device objects Release B because this interface will be used in future products. The use of this connection and existing communication protocols enable implementation in products at low cost, with maximum flexibility and efficiency. This second edition cancels and replaces the first edition, published in 2006, and constitutes a technical revision. It includes the following changes: - addition of new message structure (frame format); - updates of the device object super class specifications for the property configurations shared by all device objects; - addition of the property configurations defined by each device object; - updates of normative references.