Digi XBee-PRO XSC RS-232 User manual

Digi International
World Headquarters
11001 Bren Road East
Minnetonka, MN 55343
Phone: [phone] or
877-912-3444
Fax: [phone]
XBee-PRO® XSC RS-232/RS-485/USB RF Modem
Overview
Interfacing Protocol
Product Manual
For XBee-PRO XSC RF Modem Part Numbers:
XM-C91-2P... XM-C92-2P...
XM-C91-4P... XM-C92-4P...
XM-C91-UP... XM-C92-UP...
900 MHz Stand-alone RF Modems by Digi International, Inc.
90001355_A
2013.8.12

XBee‐PRO®XSCRS‐232/RS‐485/USBRFModem‐ProductManual
©2013DigiInternational,Inc.ii
© 2013 Digi International, Inc. All rights reserved
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Contents
XBee‐PRO®XSCRS‐232/RS‐485/USBRFModem‐ProductManual
©2013DigiInternaitonal,Inc. iii
1. Overview 4
Features Overview 4
Worldwide Acceptance 5
Specifications 5
External Interface 6
RF Modem Symbols 9
2. Interfacing Protocol 10
RS-232 Operation 10
Pin Signals 10
Wiring Diagrams 11
RS-485 (2-wire) Operation 12
Pin Signals 13
Wiring Diagram 13
RS-485 (4-wire) Operation & RS-422 Operation
14
Pin Signals 15
Wiring Diagrams 15
RS-485/422 Connection Guidelines 16
USB Operation 16
Pin Signals 16
Appendix A: Agency Certifications 18
FCC (United States) Certification 18
Labeling Requirements 18
FCC Notices 18
Limited Modular Approval 18
FCC-approved Antennas 19
IC (Industry Canada) Certification 19
Appendix B: Additional Information 23

XBee‐PRO®XSCRS‐232/RS‐485/USBRFModem‐ProductManual
©2013DigiInternational,Inc.4
1.Overview
The XBee-PRO XSC RF Modem is a small, low-power solution that uses the XBee-PRO
XSC (S3B) 900 MHz RF Module in an enclosure to communicate with systems using
RS-232, RS-485, and USB interfaces. It allows the user to easily make their existing
wired systems wireless simply by connecting to this product. The XBee-PRO XSC RF
Modem is a market replacement of Digi’s 9XStream PKG and is able to fully communi-
cate with existing 9XStream RF Modems.
When a system is connected to the XBee-PRO XSC RF Modem, it can transmit and
receive data from multiple radios on the same wireless network. This is achieved by
using Digi’s XBee-Pro XSC (S3B) RF Module.
This manual is not a comprehensive manual where a full description of the XSC RF
Modem is given. This manual only covers the interfaces needed to communicate with
the XSC (S3B) 900 MHz RF Module. For an extensive guide on use of the XSC (S3B)
900 MHz RF Module, see Appendix A of the XBee-PRO 900 HP/XBee-PRO XSC RF
Modules Product Manual.
1.1. Features Overview
Long Range Data Integrity
Range
• Indoor/Urban: Up to 2000' (610 m)
• Outdoor line-of-sight: Up to 9 miles (14
km)
Transmit Power: Up to 24 dBm (250 mW)
(software selectable)
Receiver Sensitivity: -109 dBm (@10kbps)
RF Data Rate: Up to 20kbps
Advanced Networking & Security
True peer-to-peer (no “master” required) com-
munications
Point-to-point & point-to-multipoint topologies
supported
Retries and Acknowledgements
7 hopping channels, each with over 65,000 avail-
able network addresses
FHSS (Frequency Hopping Spread Spectrum)
Low Power
Receive Current: 60 mA (@9V)
Transmit Current: 140 mA (@9V)
Easy-to-Use
No configuration required for out-of-the-box RF
data communications.
Free X-CTU Software (Testing and configuration
software)
RS-232 and RS-485 variants configurable via the
mini USB port.
Advanced configurations available through stan-
dard AT & binary commands.
Built in RS-232/RS-485/USB interfacing
Small form factor
Software-selectable serial interface baud rates
Support for multiple data formats (parity, start
and stop bits, etc.)
Free & Unlimited Technical Support

XBee‐PRO®XSCRS‐232/RS‐485/USBRFModem‐ProductManual
©2013DigiInternational,Inc.5
1.1.1. Worldwide Acceptance
FCC Approved (USA) Refer to Appendix A for FCC Requirements.
Systems that include XBee®/XBee-PRO® XSC RF modems inherit Digi Certifications.
ISM (Industrial, Scientific & Medical) 900 GHz frequency band
Manufactured under ISO 9001:2000 registered standards
XBee®/XBee-PRO® XSC (900 MHz) RF Modems are approved for use in US, Canada,
and Australia.
1.2. Specifications
*SeeAppendixAforregion‐specificcertificationrequirements.
Table1‐01. SpecificationsoftheXBee‐PROXSCRS‐232/RS‐485/USBRFModem
Specification XBee-PRO
Performance
Indoor/Urban Range Up to 2000 ft (610 m)
Outdoor line-of-sight Range Up to 9 miles (14 km) w/ dipole antenna
Up to 28 miles (45 km) w/ high-gain antenna
Transmit Power Output Up to 24 dBm (250 mW) software selectable
Throughput Data Rate 9.6kbps or 19.2kbps
RF Data Rate 10kbps or 20kbps
Interface Data Rate 125 - 65,000 bps (Software selectable, includes non-standard baud
rates)
Receiver Sensitivity -109dBm at 10kbps; -107dBm at 20kbps
Networking & Security
Frequency 902-928MHz (located in the 900MHz ISM Band)
Spread Spectrum Frequency Hopping
Supported Network Topologies Point-to-point, Point-to-Multipoint, Peer-to-Peer
Channel Capacity 7 hop sequences share 25 frequencies
Antenna
Connector RPSMA (reverse polarity SMA)
Impedance 50 ohms unbalanced
Power Requirements
Power Supply 7-30 VDC
Receive Current 60 mA (@9V)
Transmit Current 140 mA (@9V)
Physical Properties
Size 4.500” x 2.750” x 1.125” (11.4cm x 7.0cm x 2.9cm)
Weight 5.25 oz. (150 g)
Data Connection Female DB-9, RS-485/422 screw terminal, USB Type B, USB Mini-B
Operating Temperature -40 - 85º C (Industrial)
Certifications (partial list)
United States (FCC Part 15.247) MCQ-XB900HP
Industry Canada (IC) 1846A-XB900HP
Australia C-Tick
RoHS Compliant

XBee‐PRO®XSCRS‐232/RS‐485/USBRFModem‐ProductManual
©2013DigiInternational,Inc.6
1.3. External Interface
Figure1‐01. FrontView(RS232) 1-01a. Serial Port
Standard female DB-9
1-01b. Power Connector
7-30 VDC power connector
1-01c. Reset Button
The Reset Switch is used to reset (re-boot) the XBee-PRO XSC RF
Modem. This switch only applies when using the configuration tabs of
Digi's X-CTU Software.
Figure1‐02. BackView(RS232) 1-02a. RSSI LEDs
Not applicable to XBee-PRO XSC RF Modem.
1-02b. I/O & Power LEDs
LEDs indicate RF modem activity as follows:
Yellow (top LED) = Serial Data Out (to host)
Green (middle) = Serial Data In (from host)
Red (bottom) = Power/TX Indicator (Red light is on when powered,
off briefly during RF transmission)
1-02c. Commissioning Push Button
Not applicable to XBee-PRO XSC RF Modem.
1-02d. USB Mini-B Port
When USB mini is plugged in, all RS232 communications to and from
the XBee are disabled. The USB is to serve as a configuration port.
The XBee should not transmit when USB is plugged in.
1-02e. Antenna Port
Port is a 50ΩRF signal connector for connecting to an external
antenna. The connector type is RPSMA (Reverse Polarity SMA)
female. The connector has threads on the outside of a barrel and a
male center conductor.

XBee‐PRO®XSCRS‐232/RS‐485/USBRFModem‐ProductManual
©2013DigiInternational,Inc.7
Figure1‐03. FrontView(RS485) 1-03a. Serial Port
Phoenix 6- pin connector
1-03b. Power Connector
7-30 VDC power connector
1-03c. DIP Switch
120 ohms termination for the receiving differential pairs if switch is in
the up Position. Switch 1 is for half duplex (2 wire) termination.
Switch 2 is for full duplex (4 wire) termination.
1-03d. Reset Button
The Reset Switch is used to reset (re-boot) the XBee-PRO XSC RF
Modem. This switch only applies when using the configuration tabs of
Digi’s X-CTU Software.
Figure1‐04. BackView(RS485) 1-04a. RSSI LEDs
Not applicable to XBee-PRO XSC RF Modem.
1-04b. I/O & Power LEDs
LEDs indicate RF modem activity as follows:
Yellow (top LED) = Serial Data Out (to host)
Green (middle) = Serial Data In (from host)
Red (bottom) = Power/TX Indicator (Red light is on when powered,
off briefly during RF transmission)
1-04c. Commissioning Push Button
Not applicable to XBee-PRO XSC RF Modem.
1-04d. USB Mini-B Port
When USB mini is plugged in, all RS485 communications to and from
the XBee are disabled. The USB is to serve as a configuration port.
The XBee should not transmit if USB is plugged in.
1-04e. Antenna Port
Port is a 50ΩRF signal connector for connecting to an external
antenna. The connector type is RPSMA (Reverse Polarity SMA)
female. The connector has threads on the outside of a barrel and a
male center conductor.

XBee‐PRO®XSCRS‐232/RS‐485/USBRFModem‐ProductManual
©2013DigiInternational,Inc.8
Figure1‐05. FrontView(USB) 1-05a. USB Port
Type B USB port
1-05b. Power Connector
7-30 VDC power connector
1-05c. Reset Button
The Reset Switch is used to reset (re-boot) the XBee-PRO XSC RF
Modem. This switch only applies when using the configuration tabs of
Digi's X-CTU Software.
Figure1‐06. BackView(USB) 1-06a. RSSI LEDs
Not applicable to XBee-PRO XSC RF Modem.
1-06b. I/O & Power LEDs
LEDs indicate RF modem activity as follows:
Yellow (top LED) = Serial Data Out (to host)
Green (middle) = Serial Data In (from host)
Red (bottom) = Power/TX Indicator (Red light is on when powered,
off briefly during RF transmission)
1-06c. Commissioning Push Button
Not applicable to XBee-PRO XSC RF Modem.
1-06d. Antenna Port
Port is a 50ΩRF signal connector for connecting to an external
antenna. The connector type is RPSMA (Reverse Polarity SMA)
female. The connector has threads on the outside of a barrel and a
male center conductor

XBee‐PRO®XSCRS‐232/RS‐485/USBRFModem‐ProductManual
©2013DigiInternational,Inc.9
1.4. RF Modem Symbols
The following symbols are found on top of the RF Modem. The description of the symbol is next to
the symbol.

XBee‐PRO®XSCRS‐232/RS‐485/USBRFModem‐ProductManual
©2013DigiInternational,Inc.10
2.InterfacingProtocol
The XBee-PRO XSC RS-232/485/USB RF Modem supports the following interfacing protocols:
• RS-232
• RS-485 (2-wire) Half-duplex
• RS-485 (4-wire) and RS-422
•USB
2.1. RS-232 Operation
2.1.1. Pin Signals
Figure2‐01. PinsusedonthefemaleRS‐232(DB‐9)SerialConnector
Table2‐01. RS‐232PinAssignmentsandImplementation
DB-9 Pin RS-232 Name Description Implementation*
1 DCD Data-Carrier-Detect Connected to DSR (pin6)
2 RXD Received Data Serial data exiting the RF modem
(to host)
3 TXD Transmitted Data Serial data entering into the RF modem
(from host)
4 DTR Data-Terminal-Ready By default, this pin is not used. To configure this pin tosupportSleepMode,refertotheSleepMode,SM
Command and PW Command Sections.
5 GND Ground Signal Ground
6 DSR Data-Set-Ready Connected to DCD (pin1)
7RTS / CMD Request-to-Send /
Command Mode
RTS(request-to-send) flow control – By default, this
pin is not used. To configure this pin to regulate the
flow of serial data exiting the modem, refer to the
Serial Communications and
RT Command section
CMD – Refer to Binary Commands and RT
Command Sections to enable binary command
programming
8CTS Clear-to-Send CTS(clear-to-send)flowcontrol –Whenpin is driven
low, UART host is permitted to send serial data to
themodem. RefertotheSerialcommunicationsand
CS Command sections for more information
9 RI Ring Indicator Optional power input (protection circuitry to prevent back flow from other power sources internal to the
board)