3 NI9871 modules on a single VI NI Community

Ni 9871. Solved Stepper motor control with cRIO and RS 485 connection Page 2 You can use the included female four-position pigtail to connect to an external voltage source The serial ports are accessed directly from the FPGA to offer you flexibility in communicating with serial devices

Solved NI 9871 Connection from Another RT cRIO NI Community
Solved NI 9871 Connection from Another RT cRIO NI Community from forums.ni.com

This power supply provides the power for the RS485/RS422 transceivers on the module Provides support for Ethernet, GPIB, serial, USB, and other types of instruments.

Solved NI 9871 Connection from Another RT cRIO NI Community

779892-02 is a NI‑9871 4-port, RS485/RS422 C series serial interface module The module has individual buffers on every port that save FPGA space and simplify programming The National Instruments NI-9871 (Part Numbers: 779892-01, 779892-02, 779892-03) is a 4-Port RS485/RS422 Serial Interface Module designed to add serial communication capabilities to CompactRIO systems

Solved NI 9871 Connection from Another RT cRIO NI Community. The four independent ports on the NI-9871 operate in isolation from each other and from the CompactRIO chassis. The NI 9871 4-Port RS485/RS422 Serial Interface CompactRIO Module may still be available for purchase and support from Artisan Technology Group beyond End-Of-Life (EOL) by the manufacturer (OEM)

NI 9871 (4Port RS485/RS422 Serial Interface CompactRIO Module. National Instruments NI 9871 4-Port RS485/RS422 Serial Interface CompactRIO Module Manuals, Datasheets, Drivers, Links You can use a cable with an RJ50 or DB-9 terminal and a flying-lead terminal to get raw leads of a serial port