National Instruments Corporation NI 9871, 4 Port RS 485/422 Serial Module, Conformal Coating
- 4 RS485/RS422 (TIA/EIA-485/422) ports for CompactRIO
- Baud rates from 14 baud to 3.684 Mbaud; -40 to 70 C operating range
- Data bits: 5, 6, 7, 8; Stop bits: 1, 1.5, 2; Flow control: XON/OFF, RTS/CTS, None
- Individual 64 B UART FIFO buffers per port
- Transceiver modes: 4-wire, 2-wire DTR controlled, 2-wire DTR controlled with echo, 2-wire auto
- 8 to 28 VDC externally powered; PC-MF4-PT cable included
- Configure Complete CompactRIO System
- View Data Sheet
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The NI 9871 (Part Number: 779892-03) is a C Series module from National Instruments designed to add four high-speed, isolated RS485/RS422 serial ports to CompactRIO and CompactDAQ systems. This module features conformal coating for enhanced protection in harsh environments. Each port supports baud rates up to 3 Mbps and provides 250 Vrms channel-to-earth ground isolation. The NI 9871 is ideal for industrial communication applications, enabling reliable serial connectivity for devices such as sensors, actuators, and controllers. It is compatible with NI-DAQmx and NI-VISA drivers for seamless integration and programming.