User guide

TANK-101B/BW Embedded System
Page 26
Pin Description Pin Description
3 TX 8 CTS
4 DTR 9 RI
5 GND
Table 3-5: RS-232 Serial Port Pinouts
Figure 3-14: RS-232 Serial Port Pinout Location
3.7.7 RS-422/485 Serial Port Connector
CN Label: COM3
CN Type:
DB-9 connector
CN Location:
See
Figure 1-3
CN Pinouts:
See Error! Reference source not found. and
Figure 3-15
The RS-422/485 serial port device can be attached to the DB-9 port on the rear panel.
Step 1: Locate the DB-9 connector. The location of the DB-9 connector is shown in
Figure 1-3.
Step 2: Insert the serial connector. Insert the DB-9 connector of a serial device into
the DB-9 connector on the external peripheral interface. See
Figure 3-13.
Step 3: Secure the connector. Secure the serial device connector to the external
interface by tightening the two retention screws on either side of the connector.
Pin Description (RS-422) Description (RS-485)
1 RXD422 # N/A
2 RXD422 + N/A
3 TXD422 + TXD485 +
4 TXD422 # TXD485 #