Operating instructions

32 | ni.com | NI cRIO-9030 Operating Instructions and Specifications
Figure 20. RS-232 Serial Port Pin Locations
You can use the Ring Indicator (RI) on pin 2 to wake the controller from a low power state. You
can drive RI with logic-level signals where a high level greater than 2.4 V signals a wake event.
Cable adapters for the RS-232 jack are available from NI. NI part numbers 182845-01, -02, and
-03 are 1, 2, and 3 m cable adapters for connecting the 10-position modular jack to a 9-position
D-SUB plug.
RS-485/422 (DTE) Serial Port
The cRIO-9030 has an RS-485 serial port accessible through a 10-position RJ-50 modular jack.
The RJ-50 connector is isolated from the controller. Refer to the RS-485/422 (DTE) Serial Port
section of the specifications in this document for information about the electrical isolation of the
RS-485 serial port.
Refer to Figure 21 for pin locations and signal descriptions.
Figure 21. RS-485 Serial Port Pin Locations
A cable adapter for the RS-485 jack is available from NI. NI part number 184428-01 is a 1 m
cable adapter for connecting the 10-position modular jack to a 9-position D-SUB plug.
3 CTS
4 RTS
5 DSR
6 GND
7 DTR
8 TXD
9 RXD
10 DCD
1 No Connect
2 RI
1 No Connect
2 TXD–
3 TXD+
4 No Connect
5 No Connect
6 RXD–
7 RXD+
8 No Connect
9 No Connect
10 Isolated GND