XT09-PKT-RA-NA Digi International/Maxstream, XT09-PKT-RA-NA Datasheet - Page 9

• Manufacturer Part Number: XT09-PKT-RA-NA
• Description: MODEM RF 900MHZ RS232/485 INT
• Manufacturer: Digi International/Maxstream
• Series: XTend™r

Specifications of XT09-PKT-RA-NA

• Function: Transceiver, Modem
• Frequency: 900MHz
• Interface: RS-232
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Power - Output: -
• Applications: -
• Sensitivity: -
• Data Rate - Maximum: -
• Modulation Or Protocol: -

9XTend™ RS‐232/485 RF Modem ‐ Product Manual v2.x4x [2007.01.04]
2.2. RS-485 (2-wire) Operation
2.2.1. DIP Switch Settings and Pin Signals
2.2.2. Wiring Diagram
Note: Refer to Figure 2-15 and Figure 2-16 for the RJ-45 connector pin designations used in
RS-485/422 environments.
Table 2‐02. RS‐485 (2‐wire half‐duplex) signals and their implementations on the XTend RF Modem
Figure 2‐09. XTend RF Modem in an RS‐485 (2‐wire) half‐duplex environment
Figure 2‐06.
RS‐485 (2‐wire) Half‐duplex
DIP Switch Settings
Figure 2‐08.
RS‐485 (2‐wire) w/ Termination (optional)
Termination is the 120 Ω resistor between T+ and T‐.
DIP Switch settings are read and applied
only while powering‐on.
© 2007 MaxStream, Inc.
1, 3, 4, 6, 7
DB-9 Pin
2
5
8
9
RS-485 Name
T/R+ (TRB)
T/R- (TRA)
PWR
GND
Negative Data Line
Positive Data Line
Description
Ground Signal
Power
Figure 2‐07.
Pins used on the female RS‐232 (DB‐9)
Serial Connector
not used
Optional power input that is connected internally
Transmit serial data to and from the RF modem
Transmit serial data to and from the RF modem
to the front power connector
Implementation
Chapter 2 ‐ Interfacing Protocol
Ground
9