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Council Regulation (EEC) No 3821/85Show full title
Council Regulation (EEC) No 3821/85 of 20 December 1985 on recording equipment in road transport
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- Revised 02/03/20160.44 MB
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[F1 [F21. INTRODUCTION U.K.
This appendix describes how data is exchanged between a vehicle unit and a tester via the K-line which forms part of the calibration interface described in Appendix 6. It also describes control of the input/output signal line on the calibration connector.
Establishing K-line communications is described in Section 4 ‘ Communication Services ’ .
This appendix uses the idea of diagnostic ‘ sessions ’ to determine the scope of K-line control under different conditions. The default session is the ‘ StandardDiagnosticSession ’ where all data can be read from a vehicle unit but no data can be written to a vehicle unit.
Selection of the diagnostic session is described in Section 5 ‘ Management Services ’ .
[CPR_001] The ‘ ECUProgrammingSession ’ allows data entry into the vehicle unit. In the case of entry of calibration data (requirements 097 and 098), the vehicle unit must, in addition be in the CALIBRATION mode of operation.
Data transfer via K-line is described in Section 6 ‘ Data Transmission Services ’ . Formats of data transferred are detailed in Section 8 ‘ dataRecords formats ’ .
[CPR_002] The ‘ ECUAdjustmentSession ’ allows the selection of the I/O mode of the calibration I/O signal line via the K-line interface. Control of the calibration I/O signal line is described in section 7 ‘ Control of Test Pulses — Input/Output Control functional unit ’ .
[CPR_003] Throughout this document the address of the tester is referred to as ′tt′. Although there may be preferred addresses for testers, the VU shall respond correctly to any tester address. The physical address of the VU is 0xEE.] ]
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