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

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