Overview - ISO 17987-6:2025 (LIN Protocol Conformance Test Specification)
ISO 17987-6:2025 defines the protocol conformance test specification for Local Interconnect Network (LIN) communication controllers. The standard specifies a comprehensive test suite and the technical test-system requirements needed to verify that LIN controllers conform to the protocol behaviors described in ISO 17987-2 and ISO 17987-3. Its purpose is to ensure reproducible, identical test results across different test systems when those systems and test suites comply with this document. Annex A, B and C include protocol conformance test plans for responder nodes using auto‑addressing procedures C, D and E (see ISO 17987-3:2025, Annex C).
Key technical topics and requirements
The standard focuses on test definition, measurement and repeatability for LIN protocol conformance. Major technical topics include:
- Test architecture and classification - definition of test case structure and mandatory requirements for the Implementation Under Test (IUT) as commander and responder.
- Test system requirements - generation of LIN frames, bit timing and synchronization, common test-case constraints and setup predefinitions.
- Timing parameter tests - break field, break delimiter, sync byte, header and response timing, bit rate detection and tolerance, sample-point and jitter verification.
- Frame handling - verification of identifier (PID) variations, reserved frames, unused bits, supported Tx/Rx frames and checksum handling (classic and enhanced).
- Error and robustness tests - bit errors, framing errors, checksum faults, collision handling for event‑triggered frames and robustness under malformed messages.
- Status and state management - handling of response_error signals, initialization and schedule table timing.
- Power mode tests - sleep/wake‑up behaviors and verification of go‑to‑sleep and wake signals.
- Annexed test plans - responder-specific plans for auto‑addressing procedures C/D/E to support consistent conformance checks.
Practical applications and who uses it
ISO 17987-6:2025 is intended for professionals who develop, validate or certify LIN interfaces:
- Automotive ECU and microcontroller manufacturers validating LIN communication controllers.
- Supplier and OEM test laboratories performing protocol conformance verification.
- System integrators and QA teams ensuring LIN network interoperability.
- Test-equipment and tool vendors implementing standardized LIN conformance test suites.
- Compliance engineers aligning implementations to ISO 17987-2 / ISO 17987-3.
Related standards
- ISO 17987-2 - LIN physical and data-link protocol definitions (referenced).
- ISO 17987-3 - LIN application protocol and addressing (referenced), including auto‑addressing procedures used by Annex A/B/C of Part 6.
Keywords: ISO 17987-6:2025, LIN protocol conformance test, Local Interconnect Network, LIN testing, LIN communication controller, protocol conformance, auto addressing, ISO 17987-2, ISO 17987-3.
Open preview (PDF)Road vehicles — Local Interconnect Network (LIN) — Part 6: Protocol conformance test specification