Operating instructions

cRIO-9022 Operating Instructions and Specifications 10 ni.com
Connecting Serial Devices to the Controller
The controller has an RS-232 serial port to which you can connect devices
such as displays or input devices. Use the Serial VIs to read from and write
to the serial port. For more information about the Serial VIs, refer to the
LabVIEW Help.
Figure 6. Controller Serial Port
Using the Internal Real-Time Clock
The system clock of the cRIO-9022 is synchronized with the internal
high-precision real-time clock at startup. This synchronization provides
timestamp data to the controller. You can also use the internal real-time
clock to correct drift of the system clock. Refer to the Specifications section
for the accuracy specifications of the real-time clock.
Table 1. DB-9 Pin Descriptions
Pin Signal
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
Pin 1
Pin 5
Pin 6
Pin 9