TwinCAT 3 IoT OCPP with EL6761 EtherCAT Terminal
Published on : Friday 09-02-2024
Beckhoff offers a complete solution for communication with the charging infrastructure and electric vehicles.
Beckhoff has added the Open Charge Point Protocol (OCPP) to the TwinCAT IoT product portfolio based on the WebSocket protocol which has recently been introduced for the IoT driver. OCPP standardises the communication between charging stations for electric vehicles and the associated central management systems. This is combined with the new EL6761 EtherCAT Terminal, which serves as a communication interface in accordance with IEC 61851 and ISO 15118, to create a universal solution for charging infrastructure communication.
With the new function TwinCAT 3 IoT OCPP (TF6771), OCPP was implemented as a C++ driver with the associated PLC library as a wrapper. Due to their high market relevance, OCPP versions 1.6 and 2.0.1 are being implemented first. The focus is on the following two use cases:
– TwinCAT is used as a controller for a charging station together with the new EL6761 EtherCAT Terminal, and is then connected to the central management system as an OCPP client.
– When connecting other charging stations via the OCPP protocol, TwinCAT represents part of the central management system, e.g., to enable local load management of a charging station network. In parallel, TwinCAT can be connected to another management system, e.g., to implement authentication or billing mechanisms.
The EL6761 1-channel communication interface also offers two options: the EtherCAT Terminal can be used to enable communication for the charging infrastructure, directly to the electric vehicle and from it to the higher-level charging management system. Two independent communication standards are supported – PWM communication according to IEC 61851 and powerline communication according to ISO 15118. The latter provides a flexible communication channel to transmit all necessary data between the vehicle and the charging station.
Beckhoff implements open automation systems using proven PC-based control technology. The main areas that the product range covers are industrial PCs, I/O and fieldbus components, drive technology, automation software, control cabinet-free automation, and hardware for machine vision. Product ranges that can be used as separate components or integrated into a complete and mutually compatible control system are available for all sectors. Beckhoff new automation technology stands for universal and industry-independent control and automation solutions that are used worldwide in a large variety of different applications, ranging from CNC-controlled machine tools to intelligent building control.
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