NI sbRIO-9871 C Series Serial Interface Module (Supported RS422/RS485, None-Enclosed)

Adds serial ports to CompactRIO systems that allow you to communicate with serial devices.

The C Series Serial Interface Module adds RS232 or RS485/RS422 serial ports to CompactRIO systems. The serial ports are accessed directly from the field-programmable gate array (FPGA) to offer you flexibility in communicating with serial devices. The module has individual buffers on every port that save FPGA space and simplify programming. The C Series Serial Interface Module supports standard start bit, stop bit, and handshaking settings. It uses an external power to provide maximum compatibility and reliability under all serial port conditions. You can choose from both enclosed and non-enclosed modules.

Datasheet