Table 3.
USB 2.0 Port Pin Descriptions (Continued)
Pin
Signal Name
Signal Description
3
D+
USB Data +
4
GND
Ground
RS-485/422/232 Serial Port
The NI CVS-1459 has a single serial port that can operate in either RS-485/422 mode or
RS-232 mode. Set the serial port mode in the BIOS.
The serial port is a 10-position RJ50 modular jack, which can connect to serial devices, such
as PLCs, scanners, and lighting devices.
Figure 6.
RS-485/422/232 Serial Port Pin Locations
Pin 10
Pin 1
Table 4.
RS-485/422/232 Serial Port Pin Descriptions
Pin
RS-485/422 Mode
RS-232 Mode
1
No Connect
No Connect
2
TXD-
Unused
3
TXD+
Unused
4
No Connect
No Connect
5
No Connect
No Connect
6
RXD-
GND
7
RXD+
Unused
8
Unused
TXD
9
Unused
RXD
10
GND
GND
6
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NI CVS-1459 User Manual
