User's Manual

User Manual VC-EVCC

 TLS activated: 0x00 (secured with TLS)

 TLS not activated: 0x10 (No transport layer security)

5.5.8.4.2 Common Response Parameter

The SECC IP Address of the SECCDiscoveryRes is evaluated.

The SECC Port of the SECCDiscoveryRes is evaluated.

The Transport Protocol of the SECCDiscoveryRes is evaluated.

5.5.8.5 Connect Transport Layer

5.5.8.5.1 Transmission Control Protocol (TCP)

The VC-EVCC establishes an unsecure TCP connection using the SECC IP address and

SECC Port of the SECCDiscoveryRes if

 SECCDiscoveryProtocolRes has been received and

 conditions for a sequence error reaction of SECCDiscoveryProtocol do not apply and

 the Security of the SECCDiscoveryRes is 0x10 (No transport layer security).

5.5.8.5.2 Transport Layer Security (TLS)

The VC-EVCC establishes a secure TLS/TCP connection using the SECC IP address and

SECC Port of the SECCDiscoveryRes if

 SECCDiscoveryProtocolRes has been received and

 conditions for a sequence error reaction of SECCDiscoveryProtocol do not apply and

 the Security of the SECCDiscoveryRes is 0x00 (secured with TLS).

The VC-EVCC uses Transport Layer Security version 1.2.

The VC-EVCC uses the configured TLS Certificates to validate the connection.

5.5.8.6 Supported App Protocol

The supportedAppProtocolReq is sent after the successful communication setup with the

EVSE.

5.5.8.6.1 Common Request Parameter

The supportedAppProtocolReq contains the ISO15118 protocol with priority 1 (high priority)

and the DIN70121 protocol with priority 2 (lower priority).

5.5.8.6.2 Common Response Parameter

If the supportedAppProtocolRes contains the DIN 70121 as supported protocol (SchemaID)

by the EVSE, the DIN 70121 sequence will be processed.

If the supportedAppProtocolRes contains the ISO 15118 as supported protocol (SchemaID)

by the EVSE, the ISO 15118 sequence will be processed.

5.5.8.7 Session Setup

The VC-EVCC proceeds with the SessionSetupReq if the response code in the

supportedAppProtocolRes was OK and the SchemaID refers to one of the supported

protocols.