IbaBM CAN CAN/CANopen bus sniffer

S4: Control the connection of the terminal resistance (120 Ω) of Bus0.

S5: Control the connection of the terminal resistance (120 Ω) of Bus1.

S6: Control the internal connection between Bus0 and Bus1. When S6 is ON, Bus0 and Bus1 are internally connected for the "loop through" mode.

Protective Ground Interface (X29): Used to connect the system's protective ground, ensuring equipment safety and effective signal shielding.

Mechanical and Environmental Specifications:

Dimensions: 69 mm x 189 mm x 148 mm (width x height x depth)

Working temperature: 0 ° C to 50 ° C

Protection level: IP20

Installation method: Vertical DIN rail installation

System Integration and Network Topology

IbaBM CAN can be flexibly integrated into existing CAN bus systems, with three typical access methods depending on the physical structure of the bus.

1. Bus terminal access:

When the device is located at the end of the CAN bus, connect the end plug of the CAN main cable to one of the interfaces in Bus0 or Bus1. At this point, it is necessary to set the S6 switch to OFF (disconnect the internal connection between Bus0 and Bus1) and activate the terminal resistor of the corresponding interface (for example, if Bus0 is used, set S4 to ON). In this mode, two CAN bus interfaces (Bus0 and Bus1) can be used as two independent CAN bus channels, listening to two different buses respectively.

2. Intermediate node access:

When the device needs to be connected to a running bus, connect the incoming and outgoing plugs on the bus cable to the Bus0 and Bus1 interfaces of the device, respectively. At this point, S6 must be set to OFF (disconnect internal connections), and the terminal resistors of both interfaces (S4 and S5) must be set to OFF (as terminal resistors are usually provided by nodes at both ends of the bus). In this topology, the device is connected to the bus as a transparent node and listens to all communication on the bus.

3. Loop passing mode:

When the bus is disconnected at the access point, forming two cable ends with terminating resistors, these two ends can be connected to the Bus0 and Bus1 interfaces of the device respectively. At this point, S6 must be set to ON (connecting Bus0 and Bus1 internally), and the terminal resistors of both interfaces (S4 and S5) must be set to OFF. In this mode, the bus signal is transmitted internally through the device, and the device monitors the bus communication, but physically the bus is continuous. It should be noted that in loop through mode, only one CAN bus can be connected.

Communication configuration and parameterization

The parameter configuration of ibaBM CAN is divided into two levels: the network settings of the device itself and the signal acquisition configuration. The network settings are completed through the built-in web server of the device, while the signal acquisition configuration is completed through the I/O manager of ibaPDA.

1. Web interface configuration (basic settings):

Connection method: via Ethernet (URL: http://can_nnnn , where nnnn is the last four digits of the MAC address) or USB (URL: http://192.168.0.1) to access the device's web interface.

User permissions: The system distinguishes between regular users (username: can, password: can, view only) and administrators (username: admin, password: can, can modify network parameters, passwords, and firmware).

Main configuration items:

Network settings: Configure the IP address acquisition method (DHCP or static), subnet mask, and default gateway for Ethernet interfaces.

Password management: Change the login password for "can" and "admin" users.

Firmware upgrade: Upload and install the firmware update file (. CAB) provided by iba AG.

Signal settings viewing: You can view the signal mapping relationship configured in ibaPDA, but cannot modify it here.

2. ibaPDA-V6 configuration (signal acquisition settings):

This is the core step of the entire system configuration. Completed in the I/O Manager of ibaPDA-V6 (version 6.24 and above).

Add ibaBM CAN device module:

In the I/O Manager, locate the ibaFOB-D fiber input card connected to the device.

Right click on the corresponding fiber link and select "Add Module" ->"ibaBM CAN". The system will automatically detect or manually add devices.

Configure global parameters (General tab):

IP address: Enter the IP address or device name of the device (such as can_0101).

Baud rate: Set the baud rate (10 kbit/s to 1 Mbit/s) that matches the CAN bus network for each bus (Bus0, Bus1).

Global timeout: Set a global timeout period, during which if an ID does not receive a new message, the signal value will be processed according to preset rules.

Acknowledge: A special option that is only enabled when ibaBM CAN is the only device on the bus.

Configure COB timeout: Through this link, timeout times can be set separately for specific CAN IDs, overriding global settings.

Add a "sniffer" submodule:

Right click on the added ibaBM CAN device module and select "Add Module" ->"Sniffer".

Name the sniffer module and determine the signal group it processes.

Configure analog/digital signals (Analog/Digital tab):