NI-Industrial Communications for CANopen

Content Type
Programming Language
Current manual

Overview

Overview

Supported Hardware Products

Below is the list of the National Instruments CANopen hardware products that are supported by the NI-Industrial Communications for CANopen software. These CANopen products are fully compliant with the CANopen Specification.

  • NI 9881—A C-Series CANopen module used for NI CompactRIO platform. This hardware allows you to use your CompactRIO chassis to communicate with and control CANopen devices.
  • PCI-8531—Compliant with the PCI Local Bus Specification. This hardware allows you to use a PC-compatible computer with PCI Local Bus slots to communicate with and control CANopen devices.
  • PXI-8531—Compliant with the PXI Specification and CompactPCI Specification. This hardware allows you to use your PXI or CompactPCI chassis to communicate with and control CANopen devices.

Isolation

All NI CANopen products protect your equipment from being damaged by high-voltage spikes on the target bus. Bus ports on PXI and PCI CANopen products support channel-to-channel and channel-to-bus isolation, and are galvanically isolated up to 500 Vrms (5 s max withstand). Bus ports on C-Series CANopen products support channel-to-bus isolation, and are galvanically isolated up to 1000 Vrms (5 s max withstand).

Transceiver

All of the supported CANopen products use the NXP PCA82C251 High-Speed CAN transceiver. The NXP PCA82C251 is fully compatible with the ISO 11898 standard and supports all the CANopen baud rates (10 kbps, 20 kbps, 50 kbps, 125 kbps, 250 kbps, 500 kbps, 800 kbps, and 1 Mbps).

LED Indicator

NI CANopen boards include two LEDs to help you monitor hardware and bus status. LED 1 primarily indicates whether the hardware is currently in use. LED 2 primarily indicates error information. Each LED can display two colors (red or green), which display in the following three patterns:

Pattern Meaning
Off No LED illumination
Solid LED fully illuminated
Blink Blinks in the following pattern: 140 ms on, 140 ms off

The hardware status LED definitions are as follows:

LED Description
Off No application is using the CANopen hardware port. The CANopen port is disconnected from the CANopen network in this state.
Solid Green The CANopen hardware port is opened in a normal condition.
Blink Green The CANopen hardware port is stopped.

The error status LED definitions are as follows:

LED Description
Off No errors are detected.
Blink Red Error occurs when initializing the firmware. The hardware may be problematic.
Solid Red CAN network is bus off. You can clear the bus off error physically and reopen the CANopen interface.
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