Product Description:
National Instruments Corporation 779892-03 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
View Support Resources
The NI 9871 C Series serial module adds four RS485/RS422 serial ports to NI CompactRIO systems. It interfaces directly with the CompactRIO FPGA to offer you flexibility in communicating with serial devices. The module has individual 64 B buffers on every port that save CompactRIO FPGA space and simplify programming.
This C Series module supports standard start bit, stop bit, and handshaking settings, and has baud rates up to 3.684 Mbaud per port. You can pass up to 1.28 Mbit/s of data between the module and CompactRIO.
The NI 9871 uses an external power supply to provide maximum compatibility and reliability under all serial port conditions. A 35 cm female microfit to pigtail power cable is included for quick connection to the CompactRIO external power supply. The optional PC-MF4-Y C Series microfit male to 2 female Y adapter cable is available for daisy chaining multiple NI 987x module power supplies.
NI 987x C Series modules are available in a bundle with four 10P10C modular jack to DB9 (DE9) male cables for out-of-the-box connectivity.
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