Protocol analysis
R&S
®
RTO6
604
User Manual 1801.6687.02 ─ 05
are shown in a table. You can enable the search zoom window to view the frame with
the selected result in more detail.
The figure shows the result of a search for an "EngineData" message and the signal
"IdleRunning = Running" inside the message. The result marker (blue line) is set to the
start of the frame that fulfills the search condition. The search zoom window Search1 is
active. It has been moved to the right until the "IdleRunning" bit with value 0 is visible in
the zoom.
Remote command:
●
SEARch:RESult:CAN:FRAMe<m>:SDATa?
13.8
LIN (option R&S
RTO6-K520)
The Local Interconnect Network (LIN) is a simple, low-cost bus system used within
automotive network architectures. LIN is usually a subnetwork of a CAN bus. The pri-
mary purpose of LIN is the integration of uncritical sensors and actuators with low-
bandwidth requirements. Common applications in a motor vehicle are the control of
doors, windows, wing mirrors, and wipers.
13.8.1
The LIN protocol
This chapter provides an overview of protocol characteristics, frame format, identifiers
and trigger possibilities. For detailed information, order the LIN specification on
(free of charge).
LIN characteristics
Main characteristics of LIN are:
●
Single-wire serial communications protocol, based on the UART byte-word inter-
face
●
Single primary, multiple secondaries - usually up to 12 nodes
●
Primary-controlled communication: primary coordinates communication with the
LIN schedule and sends identifier to the secondaries
●
Synchronization mechanism for clock recovery by secondary nodes without crystal
or ceramics resonator
The R&S
RTO6 supports several versions of the LIN standard: v1.3, v2.0, v2.1 and the
American SAE J2602.
Data transfer
Basic communication concept of LIN:
●
Communication in an active LIN network is always initiated by the primary.
●
The primary sends a message header including the synchronization break, the
synchronization byte, and the message identifier.
LIN (option R&S
RTO6-K520)
