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Chapter 3 LEDs, DIP Switches, and Connectors
NI 1450 Series Compact Vision System User Manual 3-10 ni.com
COM1
COM1 is a high-speed RS-232 (DTE) serial port used for connecting to
serial devices, such as PLCs, scanners, and lighting devices.
Note The Serial Port VIs access COM1 as Port 0.
Figure 3-7 shows the locations of the COM1 DSUB 9-pin connector.
Refer to Table 3-4 for COM1 signal names and descriptions
Figure 3-7. COM1 DSUB 9-Pin Connector
Table 3-4. COM1 Connector Signals
Pin Signal Name Signal Description
1 DCD Data Carrier Detect
2 RXD Receive Data
3 TXD Transmit Data
4 DTR Data Terminal Ready
5 C Common of the NI 1450 main power
6 DSR Data Set Ready
7 RTS Ready to Send
8 CTS Clear to Send
9 RI Ring Indicator
1
95
6
NI 1454
Compact Vision System