National Instruments Corporation NI PXIe-8431/16,16 Port, RS485/RS422 Serial Interface for PXIe
- Compatible with Windows 7/Vista/XP/2000, LabVIEW Real-Time
- Selectable 4- and 2-wire transceiver modes for full- and half-duplex communication
- High-speed DMA interface minimizes CPU overhead; 128 B transmit and receive FIFOs
- Flexible standard and nonstandard baud rates from 2 baud to 3,000,000 baud
- Includes two 8-port breakout cables (68-pin VHDCI to eight D-Sub 9-pin male ports)
- NI-Serial driver includes free NI-VISA API for easy programming
- Configure System
The NI PXIe-8431/8 is a high-performance, 8-port asynchronous serial interface for high-speed communication with RS485 and RS422 devices at rates of up to 3 Mbaud. Refer to ni.com/kb and search the KnowledgeBase for 58KEI82F for use with higher rates. NI high-performance RS485/422 interfaces are available with up to 16 ports. The NI PXIe-8431/8 offers flexible baud rates for data transmissions between 2 baud and 1 Mbaud with better than 0.015 percent accuracy for standard baud rates, 0.5 percent for nonstandard baud rates, and 1.3 percent above 1 Mbaud.
NI 843x serial interfaces feature high-performance DMA transfers, multithreading, and multiprocessor support. Unlike traditional interrupt-based serial interfaces, you can use multiple NI serial interfaces to communicate with dozens of ports at high rates effortlessly in a single system with minimal CPU usage. The included NI-VISA API simplifies serial programming in NI LabVIEW and other languages and keeps your code portable between all VISA-compatible interfaces. NI serial interfaces also show up as standard COM ports for compatibility with programs that use serial communications.