Справочник Пользователя для National Instruments NI 1450 Series
Chapter 3
LEDs, DIP Switches, and Connectors
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.
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
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
9
5
6
NI 1454
Compact Vision System
Compact Vision System