Digi Digi XBee SX User manual

XBee Radio Frequency (RF) Modems
XBee-PRO SX RF Modem
User Guide

Revision history— 90001577
Revision Date Description
A August 2016 Baseline release of the document.
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XBee RF Modems User Guide 2

Contents
XBee RF Modems User Guide
Applicable firmware and hardware 5
Regulatory approvals 5
General XBee RFModem specifications 5
Power requirements 5
Communication interface specifications 6
Physical properties 7
XBee-PRO SX RF Modem specifications 7
Networking specifications 7
Performance specifications 8
Hardware
Front view (RS-232/RS-485 variant) 10
Power connector 10
RS-232/RS-485 serial port 10
RJ-45 pin signals 11
Front view (Analog/Digital I/O variant) 12
Analog and Digital I/O ports 12
Power connector 12
Phoenix 10-pin connector signals 12
Back view (all variants) 13
RSSI LEDs 14
I/O and associate LEDs 14
USB Mini-B port 14
DIP switch 14
Reset and Commissioning buttons 14
Antenna Port 14
Getting started with the XBee RF Modem
Kit requirements 16
System requirements 16
Additional requirements 16
Identify the kit contents 16
Connect to the USB port 16
Connect to the RS-232 port 17
Configure the device using XCTU 18
Discover local XBee RF Modems 18
Configure a network 21
XBee RF Modems User Guide 3

XBee RF Modems User Guide 4
Operation
Commissioning Pushbutton behavior 24
XBee-PRO SX RF Modem 24
Interfacing protocols 24
RS-232 operation 25
RS-485 (2-wire) half-duplex operation 26
RS-485 (4-wire) full-duplex operation 27
RS-485 connection guidelines 27
Analog input single-ended voltage operation 28
Analog input current loop operation 28
Analog input differential voltage operation 28
Digital input operation 29
Digital sinking driver output operation 29
Configure analog and digital modes 29
Analog and digital I/O sampling 31
Certifications
FCC (United States) 34
FCC Part 15 Class B 34
Labeling requirements (FCC 15.19) 34
Modifications (FCC 15.21) 34
XBee RF Modem approved antennas (30 dBm maximum RF power) 35
Industry Canada (IC) 40
RF Exposure 40
ACMA (Australia) 40
Power requirements 40
Troubleshooting
Reset the XBee RF Modem 42

XBee RF Modems User Guide
The XBee RF Modem is an enclosed, compact solution that includes an XBee RF Module and supports
communication with systems using RS-232, RS-485, USB, analog input, and digital I/O interfaces. The
modem's on-board XBee RF module transmits and receives data from other devices on the same
wireless network, allowing you to easily make your existing wired systems wireless.
This user guide does not provide a comprehensive description of the XBee modules—it only covers the
interfaces and instructions of the XBee RF Modem. For an extensive guide on use of the XBee RF
Module being used on your modem, see the appropriate user guide listed below:
nXBee-PRO SX Module: XBee/XBee-PRO SX RF Module User Guide
Applicable firmware and hardware
This manual supports the firmware for the following modems:
nXBee-PRO SX RF Modem: 0x900X
It supports the following hardware:
nXBee RS-232/RS-485 RF Modem
nXBee Analog/Digital I/O RF Modem
Regulatory approvals
The following table provides the device's regulatory approvals. See Certifications for important
information.
Country Modem Approval
United States XBee-PRO SX RF Modem Contains FCC ID: MCQ-XBPSX
Canada XBee-PRO SX RF Modem Contains IC: 1846A-XBPSX
Australia XBee-PRO SX RF Modem RCM
General XBee RFModem specifications
Power requirements
The following table provides the device's power requirements.
XBee RF Modems User Guide 5

XBee RF Modems User Guide General XBee RFModem specifications
XBee RF Modems User Guide 6
Specification Condition Value
Supply voltage range 7-30 VDC
Typical supply voltage 12 V
Receive current VCC = 12 V 20 mA
Transmit current VCC = 12 V 300 mA
Sleep current VCC = 12 V 5 mA
Communication interface specifications
The following table provides the device's communication interface specifications.
Specification Condition Value
USB interface baud rate (software selectable) 1200 - 921600 b/s
RS-232 interface baud rate (software selectable) 1200 - 230400 b/s
RS-485 interface baud rate (software selectable) 1200 - 921600 b/s
Analog inputs
Absolute voltage rating (each pin) Maximum: 11 V
Minimum: -0.5 V
Operating input range (observe the absolute voltage
ratings shown above)
Single-ended
voltage mode
0 - 10 VDC
Current loop mode 4 - 20 mA
Differential
voltage mode
± 4 VDC
Input impedance Single-ended
voltage mode
13300 Ω
Current loop mode 120 Ω
Differential
voltage mode
~1 MΩ
Resolution 10 bits
Accuracy Temperature =
25°C
0.5%
Digital inputs
Input type Non-inverting Schmitt
trigger gate
Positive-going switching threshold 2.5 V
Negative-going switching threshold 1 V

XBee RF Modems User Guide XBee-PRO SX RF Modem specifications
XBee RF Modems User Guide 7
Specification Condition Value
Absolute voltage rating (each pin) Maximum: 31 V
Minimum: -0.5 V
Input impedance ~1 MΩ
Digital outputs
Output type Open collector sinking
driver
Maximum sink current 200 mA
Maximum supply voltage for external pull-up resistor 31 V
Resistor pull-ups (switch selectable) 10 kΩ pulled up to 3.3
VDC
Physical properties
The following table provides the device's physical properties.
Specification Value
Size 4.500" x 2.750" x 1.125" (11.4 cm x 7.0 cm x 2.9 cm)
Weight TBD
Restriction of Hazardous Substances (RoHS) Compliant
Data connection Female RJ-45, 10-pin screw terminal, USB Mini-B
Antenna impedance 50 Ω unbalanced
Maximum input RF level at antenna port 6 dBm
Operating temperature -40°C -85°C (industrial)
XBee-PRO SX RF Modem specifications
Networking specifications
The following table provides the XBee-PRO SX RF Modem's networking and security specifications.
Specification Value
Modulation Gaussian Frequency Shift Keying (GFSK)
Spreading
technology
Frequency Hopping Spread Spectrum (FHSS)

XBee RF Modems User Guide XBee-PRO SX RF Modem specifications
XBee RF Modems User Guide 8
Specification Value
Supported network
topologies (software
selectable)
Peer-to-peer (master/slave relationship not required), point-to-point/point-
to-multipoint, mesh
Encryption Optional 256-bit Advanced Encryption Standard (AES) cipher block chaining
(CBC) Encryption. Use the EE command to enable encryption. Use the KY
command to set the encryption key.
Performance specifications
The following table provides the performance specifications for the XBee-PRO SX RF Modem.
Specification Condition Value
Frequency range ISM 902 to 928 MHz
RF data rate (Software selectable) Low data rate 10 kb/s
Middle data rate 110 kb/s
High data rate 250 kb/s
Transmit power (software selectable) Up to 30 dBm
Rural range line of sight Low data rate Up to 105 km (65 mi)1
Urban range line of sight Low data rate Up to 18 km (11 mi)2
Receiver sensitivity Low data rate -113 dBm
Middle data rate -106 dBm
High data rate -103 dBm
Receiver IF selectivity Low data rate ± 250 kHz 40 dB
Low data rate ± 500 kHz 50 dB
Middle data rate ± 250 kHz 30 dB
Middle data rate ± 500 kHz 40 dB
High data rate ± 500 kHz 30 dB
High data rate ± 1000 kHz 45 dB
Receiver RF selectivity Below 900 MHz and above 930 MHz > 50 dB
1We estimate rural ranges based on a 14.5 km (9 mi) range test with dipole antennas.
2Range estimated assuming the urban noise floor is approximately 15 dB higher than rural. The actual range
depends on the setup and level of interference in your location.

Hardware
Front view (RS-232/RS-485 variant) 10
Front view (Analog/Digital I/O variant) 12
Back view (all variants) 13
XBee RF Modems User Guide 9

Hardware Front view (RS-232/RS-485 variant)
XBee RF Modems User Guide 10
Front view (RS-232/RS-485 variant)
Number Function
1 RS-232/RS-485 serial port
2 Power connector
Power connector
7 - 30 VDC power connector
RS-232/RS-485 serial port
CAUTION! The RJ-45 port is only for RS-232/RS-485 connections. If you plug in any
Power over Ethernet (PoE) connection, it will damage the port.
Female RJ-45