B&B Electronics APXN-Q5428 - User Manual - Manual (Page 12)

B&B Electronics, Inc. AirborneM2M™ User Manual
12 1/9/2014
5.0
Pinout and Connectors
The following defines the pinouts for the wired interfaces.
5.1 Serial Ports
The AirborneM2M ™ unit supports two serial ports. The Port pinout can change
depending upon the interface configuration chosen. Table 1 shows the pinout for
the interface selected.
Figure 2- DE-9 (DB-9) Connector Pin-out
Table 1–Serial Port Pin Definition
Pin RS232 (DTE)
RS232 w/Power
on pin 9 2
RS422/RS485
4-wire
RS485
2-wire
1 No Connect No Connect No Connect No Connect
2 RxD RxD RxD+ Connect to pin 3 3
3 TxD TxD TxD+ TxD+/RxD+
4 No Connect No Connect No Connect No Connect
5 GND GND GND GND
6 No Connect No Connect RxD- Connect to pin 9 3
7 RTS RTS No Connect No Connect
8 CTS CTS No Connect No Connect
9 No Connect 5VDC (Input) TxD- TxD-/RxD-

1. For 2-wire operation, the user must externally connect pin 3 to pin 2 and
pin 6 to pin 9.
The Port 1 and Port 2 interfaces support the following configurations:

BAUD: 300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400,
57600, 115200, 230400, 460800, 921600

Flow Control: None, Hardware (CTS/RTS), Software (XON/XOFF)

Port 1 Default settings: 9600, 8, N, 1, No Flow Control.

Port 2 Default settings: 9600, 8, N, 1, No Flow Control.