Description
The NI-9881 is a component under the category of Industrial Communication Interfaces, specifically designed for CANopen communication. It carries the part numbers 151838C-81L, 781673-01. This model is particularly notable for its 1 Port CANopen Interface, facilitating straightforward integration into various industrial systems.
The interface type, as mentioned, is CANopen, which is a robust communication protocol used widely in automation and control systems. The NI-9881 features 1 CANopen channel, which enables it to manage a single CANopen communication line. This channel is capable of operating at a maximum baud rate of up to 1 Mbits/s, ensuring fast and efficient data transmission.
For physical connectivity, the device uses a 9-pin, D-Sub male connector. This choice of connector is standard in the industry, making the NI-9881 easily compatible with existing systems. Additionally, it includes two common pins, which are internally connected to an isolated reference, enhancing the safety and reliability of the connection. An optional shield pin (SHLD) is also available, offering further protection against electromagnetic interference, thereby ensuring more stable communication.
One of the notable features of the NI-9881 is its software-selectable, 120 Ω termination resistors. This flexibility allows users to adapt the bus termination according to the specific requirements of their communication network, enhancing the interface’s versatility and applicability across a range of industrial scenarios.
| Specification | Description |
|---|---|
| Part Number | 151838C-81L, 781673-01 |
| Category | Industrial Communication Interfaces |
| Model | NI-9881 |
| Description | NI 9881, C Series CANopen Interface, 1 Port |
| Interface Type | CANopen |
| Channels | 1 CANopen channel |
| Maximum Baud Rate | Up to 1 Mbits/s |
| Connector | 9-pin, D-Sub male connector |
| Common Pins | Two, internally connected to isolated reference |
| Optional Shield Pin | Yes (SHLD) |
| Bus Termination | Software-selectable, 120 Ω termination resistors |
Question 1: What is the max speed of the NI-9881’s channel?
Answer 1: Up to 1 Mbits/s
Question 2: What type of connector does the NI-9881 use?
Answer 2: 9-pin, D-Sub male connector
Question 3: Does the NI-9881 have software-selectable resistors?
Answer 3: Yes, 120 Ω termination resistors
Question 4: How many channels does the NI-9881 have?
Answer 4: 1 CANopen channel
Question 5: Are there optional pins for EMI protection?
Answer 5: Yes, an optional SHLD pin
