Reading a partnumber ==================== Reading part number from ECU 0x50 --------------------------------- .. code-block:: none ---> ID=000ffffe data=50 88 00 00 00 00 00 00 <--- ID=00000003 data=50 8e 00 00 31 25 49 03 Part Number: 000031254903 .. code-block:: none CAN_HS ---> ID=000ffffe data=cb 50 b9 f0 00 00 00 00 CAN_HS <--- ID=01000003 data=8f 50 f9 f0 00 08 68 85 CAN_HS <--- ID=01000003 data=09 13 20 20 41 30 65 70 CAN_HS <--- ID=01000003 data=4c 24 20 20 41 00 00 00 First byte in reply is a technical field, like rolling counter, start (0x80)/end(0x40 flag of the multipart message, etc. The P/N is: 08 68 85 13 == 8688513 quick analysis -------------- data = cb 50 b9 f0 - length = 3 (cb-c8) - module = 50 (CEM) - type of operation = b9 (read datablock by offset) - ECU Identification ------------------ .. code-block:: none B9F0 can0 00400003 [8] 8F 50 F9 F0 00 08 69 07 can0 00400003 [8] 09 19 20 20 20 30 72 89 can0 00400003 [8] 4C 79 20 41 41 00 00 00 B9F1 - B9F4 can0 00400003 [8] CC 50 7F B9 12 00 00 00 Downloadable Software Part Number --------------------------------- .. code-block:: none B9F5 can0 00400003 [8] 8F 50 F9 F5 00 30 78 63 can0 00400003 [8] 09 53 20 41 41 00 00 C0 can0 00400003 [8] 0A 00 00 30 78 62 13 20 can0 00400003 [8] 0B 41 41 00 00 40 00 00 can0 00400003 [8] 0C 30 72 89 81 20 41 41 can0 00400003 [8] 4C 00 00 70 00 00 00 00 hex2human --------- CAN Config Part Number: 0030786353204141 (30786353 AA) Flash Sector Start Address: 0000C000 Application Software Part Number: 0030786213204141 (30786213 AA) Flash Sector Start Address: 00004000 Local Config Part Number: 0030728981204141 (30728981 AA) Flash Sector Start Address: 00007000