User Manual

Protocol Analysis
R&S
®
Scope Rider RTH
196User Manual 1326.1578.02 ─ 08
Column Description
ID [hex] Identifier value, hexadecimal value
DLC Data length code, coded number of data bytes
Values 8 bit [format] Values of data frames. The data format is selected in the "Bus" menu.
CRC CRC value
State Overall state of the frame.
"Incomplete" indicates that the frame is not completely contained in the
acquisition. Change the time scale to get a longer acquisition.
Remote control commands are described in Chapter 14.11.5.3, "CAN Decode
Results", on page 405.
8.6 LIN (Option R&S RTH-K3)
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 to integrate uncritical sensors and actuators with low bandwidth
requirements. Common applications in a motor vehicle are the control of doors, win-
dows, wing mirrors, and wipers.
8.6.1 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 http://
www.lin-subbus.org/ (free of charge).
LIN characteristics
Main characteristics of LIN are:
●
Single-wire serial communications protocol, based on the UART byte-word inter-
face
●
Single master, multiple slaves - usually up to 12 nodes
●
Master-controlled communication: master coordinates communication with the LIN
schedule and sends identifier to the slaves
●
Synchronization mechanism for clock recovery by slave nodes without crystal or
ceramics resonator
The R&S RTH 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 master.
LIN (Option R&S RTH-K3)