New PDF release: GPSS-H.A 23-year retrospective view

By Henriksen J.O.

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The units that are transported in a LIN diagnostic frame are called PDU (Packet Data Unit). A PDU can be a complete message or a part of a message; in the latter case, multiple concatenated PDUs form the complete message. Messages issued by the client (ISO: tester, LIN: master) are called requests and messages issued by the server (ISO: master, LIN: slave) are called responses. Flow control (as defined in ISO [1]) is not used in LIN clusters. If the back-bone bus test equipment needs flow control PDUs, these must be generated by the master node.

V. d. e. the serial number and message IDs are optional. 8. OPTIONAL REQUESTS Requests listed in this section are optional and may be implemented in a LIN slave node. The requests are optional because their cost impact is not always motivated. Still, they are specified in order to encourage a uniform solution to the problem they intend to solve. That is, solving the same task as the following requests in a different way is recommended. 1 Assign NAD Assign NAD is used to resolve conflicting node addresses.

In multi-PDU messages, all the bytes in all PDUs of the message shall be concatenated into a complete message, before being parsed. e. their value shall be 255 (0xff). 2 Defined requests The LIN transport layer uses the same diagnostic messages as the ISO diagnostics standard, [2]. From this follows that SID and RSID shall also be according to the ISO standard. A node may implement a sub-set of the services defined in the ISO standard. g. P2, ST and T1. The properties shall be within a defined range.

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GPSS-H.A 23-year retrospective view by Henriksen J.O.

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