XCP - Protocol Introduction in Automotive

XCP -Protocol

1. XCP -Protocol Some facts about XCP ➢ XCP signifies “Universal Measurement and Calibration Protocol”. The “X” stands for the variable and interchangeable transport layer. ➢ It was standardized by an ASAM working committee (Association for Standardisation of Automation and Measuring Systems). ASAM is an organization of automotive OEMs, suppliers and tool producers. ➢ XCP is the protocol that succeeds CCP (CAN Calibration Protocol). ➢ The conceptual idea of the CAN Calibration Protocol was to permit read and write access to internal ECU data over CAN. XCP was developed to implement this capability via different transmission media. Then one speaks of XCP on CAN, XCP on FlexRay or XCP on Ethernet. ➢ The primary applications of XCP are measurement and calibration of internal ECU parameters.Here , the protocol offers the ability to acquire measured values “event synchronous” to processes in ECUs. This ensures consistency of the data between one another. ➢ XCP protocol works on Master and Slave Concept, here ECU can act as a SLAVE, Test tool in which we send the command will act as a Master XCP frame format