Node Overview

In ETStudio's simulation configuration, a Node represents a virtual ECU attached to a particular bus. Multiple Nodes share the same Bus and communicate by sending and receiving messages, thereby simulating the behavior of the entire network without requiring real hardware.

Each Node typically corresponds to an electronic control unit in a real vehicle, for example:

• BCM (Body Control Module)
• EMS (Engine Management System)
• TCU (Transmission Control Unit)
• IPK (Instrument Cluster)

This chapter describes how to create, configure, and manage Nodes.

Node Configuration

Methods to Add a Node

1. Directly import a .dbc or .ldf file, right-click the file and select Node Synchronization, then move the available nodes from the left side to the right side as needed. The defined Nodes will be generated automatically.

2. Right-click Nodes and select Insert Node to add a custom node.

Note: You can zoom in or out of the Node view by holding down the Ctrl key and scrolling the mouse wheel.

Methods to Compile Nodes

Click the button at the bottom-left of the ECU to compile a single node.

Click the button shown in the figure below, or right-click Nodes and select Build All, to compile all nodes on this bus.

If you want to skip a particular node when compiling all nodes, you can right-click the ECU and select Disable.

Online Replay Node

Right-click Logplayer and choose Insert Replay Block CAN. In the Replay Block, right-click and select Configuration to configure online replay.

Replay Configuration includes the following sections:

• General
• Channel Assignment
• Time Range Selection
• CAN Options
• Filter

General

Used to configure the basic information of the replay block.

Area	Button	Description
General	Source file	Import a .asc or .blf file
Output modes	Standard Step After timeout of	Standard replay mode Replay step by step according to count Start replay after a certain delay
Start timing conditions	Immediately After timeout of	Start replay immediately Start replay after a certain delay
Start options	Start replay on measurement start	When checked, online replay starts automatically as soon as the host software starts

Channel Assignment

Used to select the CAN channels that participate in the replay.

Operation steps:

1. Select the target channel in the channel list.
2. As in original — initialize the settings
3. Ignore all — ignore all configurations

Time Range Selection

Used to select the time range within the replay file.

Parameter	Description
Start of log source	Start time of the source file (unit: seconds)
End of log source	End time of the source file (unit: seconds)
Selection start	Replay start time (unit: seconds)
Selection end	Replay end time (unit: seconds)

CAN Options

Used to configure CAN bus parameters.

• Tx message: When checked, only transmitted messages are displayed
• Rx message: When checked, only received messages are displayed

Filter

Used to filter the replayed messages.

• Filter by ID
• Filter by message name
• Filter by ID range