Description
The National Instruments PXI-8431/8 is an 8-port serial interface module designed for high-speed RS485 and RS422 communication in PXI systems. It supports full- and half-duplex transmission, offering advanced DMA, multithreading, and multiprocessor capabilities. This module enables efficient and reliable serial communication with industrial and embedded devices.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
National Instruments |
| Category |
Data Acquisition and Control
|
| Part Number |
PXI-8431/8 |
| Subcategory |
PXI Serial Communication Modules |
| Interface Type |
RS485 / RS422
|
| Number of Ports |
8
|
| Baud Rate |
Up to 3 Mbps
|
| Transceiver Modes |
2-wire (half-duplex), 4-wire (full-duplex)
|
| Communication Support |
Multithreaded, Multiprocessor compatible
|
| Connector Type |
68-pin SCSI (with DB-9 breakout cable)
|
| DMA Support |
Yes |
| COM Port Emulation |
Yes |
| Max Device Count per Port |
32 (RS485) |
| Cable Length Support |
Up to 4000 feet (RS485) |
| Power Supply |
+5 VDC, 925 mA (typ.), 1.4 A (max) |
| Dimensions (W x H) |
3.94 x 6.37 in |
| Weight |
137 g |
Information About PXI-8431/8
The PXI-8431/8 is a PXI-based serial interface module developed by National Instruments (NI) for RS485 and RS422 communication. It features eight serial ports configurable for 2- or 4-wire transceiver modes, allowing full or half-duplex data transmission. The module supports data rates up to 3 Mbps and is compatible with Windows-based applications through standard COM port emulation. Designed with a 68-position SCSI interface, the PXI-8431/8 is ideal for distributed automation systems, data acquisition, and industrial serial device integration.
Key Features:
- 8-Port RS485/RS422 Support: Provides eight independent serial ports for high-speed communication.
- Full/Half Duplex Modes: Supports 4-wire full-duplex and 2-wire half-duplex operation.
- High Baud Rate: Operates at up to 3 Mbps, suitable for demanding data transmission needs.
- COM Port Compatibility: Appears as standard COM ports for seamless integration with legacy applications.
- Advanced DMA and Threading: Utilizes high-performance DMA, multithreading, and multiprocessor features.
- Multi-Drop RS485 Networks: Supports up to 32 devices on a single port, ideal for industrial automation.
- PXI Platform Integration: Easily deployable within PXI-based test and control systems.
- Included Accessories: Ships with a 68-pin SCSI to 8 x DB-9 male breakout cable.
The PXI-8431/8 delivers the reliability and scalability required for industrial serial communication and PXI-based system integration.
