User Manual

TANK-800 Embedded System
Page 35
Figure 3-25: DB-9 Connector Pinout Location
Pin Description (RS-422) Description (RS-485)
1 IRXD422+ N/A
2 IRXD422# N/A
3 ITXD422+ ITXD485+
4 ITXD422# ITXD485#
5 GND GND
6 N/A N/A
7 N/A N/A
8 N/A N/A
9 N/A N/A
Table 3-6: DB-9 Connector Pinouts
3.7.10 RS-232 Serial Port Connectors
CN Label:
COM1, COM2, COM3 and COM4
CN Type:
DB-9 connectors
CN Location:
See
Figure 1-2
CN Pinouts:
See
Table 3-7 and Figure 3-27
RS-232 serial port devices can be attached to the DB-9 ports on the rear panel.
Step 1: Locate the DB-9 connector. The locations of the DB-9 connectors are shown
in
Figure 1-2.
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 3-26.