Digi XBee3 Cellular LTE Cat 1 Manuale utente

Digi XBee3® Cellular LTE Cat 1

Smart Modem

User Guide

Revision history—90002253

Revision Date Description

AJanuary

2018

Initial release of the document.

B February

2018

Added instructions for sending an SCI request to Remote Manager. Added

details on SPI operation. Added antenna keepout area for Bluetooth. Updated

specifications for Bluetooth.

C June

2018

0B software release. Added file system and TLS sections, ATcommands and

related changes.

Trademarks and copyright

Digi, Digi International, and the Digi logo are trademarks or registered trademarks in the United

States and other countries worldwide. All other trademarks mentioned in this document are the

property of their respective owners.

Disclaimers

Information in this document is subject to change without notice and does not represent a

commitment on the part of Digi International. Digi provides this document “as is,” without warranty of

any kind, expressed or implied, including, but not limited to, the implied warranties of fitness or

merchantability for a particular purpose. Digi may make improvements and/or changes in this manual

or in the product(s) and/or the program(s) described in this manual at any time.

Warranty

To view product warranty information, go to the following website:

www.digi.com/howtobuy/terms

Send comments

Documentation feedback: To provide feedback on this document, send your comments to

techcomm@digi.com.

Customer support

Digi Technical Support: Digi offers multiple technical support plans and service packages to help our

customers get the most out of their Digi product. For information on Technical Support plans and

pricing, contact us at +1 952.912.3444 or visit us at www.digi.com/support.

Digi XBee3 Cellular LTE Cat 1 Smart Modem User Guide 2

Contents

Digi XBee3 Cellular LTE Cat 1 Smart Modem User Guide

Applicable firmware and hardware 10

SIM cards 10

Getting started with the XBee Smart Modem Development Kit

Identify the kit contents 12

Connect the hardware 13

XBIB-U-DEV reference 15

Cellular service 16

Configure the device using XCTU 17

Add a device 17

Check for cellular registration and connection 18

Update to the latest firmware 18

Send an SMS message to a phone 20

Debugging 21

Connect to the ELIZA server 22

Debugging 23

Connect to the Echo server 24

Debugging 25

Connect to the Daytime server 26

Debugging 27

More examples 27

Perform a (GET) HTTP request 28

Get started with CoAP 30

Connect to a TCP/IP address 34

Get started with MQTT 36

Get started with MicroPython 45

About MicroPython 45

MicroPython on the XBee Smart Modem 45

Use XCTU to enter the MicroPython environment 46

Use the MicroPython Terminal in XCTU 46

Example: hello world 47

Example: turn on an LED 47

Example: code a request help button 48

Exit MicroPython mode 52

Other terminal programs 52

Use picocom in Linux 54

Software libraries 55

Digi XBee3 Cellular LTE Cat 1 Smart Modem User Guide 3

Digi XBee3 Cellular LTE Cat 1 Smart Modem User Guide 4

Technical specifications

Interface and hardware specifications 57

RF characteristics 57

Networking specifications 57

Power requirements 57

Power consumption 58

Electrical specifications 58

Regulatory approvals 59

Hardware

Mechanical drawings 61

Pin signals 61

Pin connection recommendations 62

RSSI PWM 63

SIM card 63

The Associate LED 63

Antenna recommendations

Antenna connections 66

Keepout area 67

Through-hole keepout 68

Antenna placement 68

Design recommendations

Cellular component firmware updates 70

USB Direct design 70

Power supply considerations 70

Recommended application circuit 71

Heat considerations and testing 71

Heat sink guidelines 72

Add a fan to provide active cooling 73

Cellular connection process

Connecting 75

Cellular network 75

Data network connection 75

Data communication with remote servers (TCP/UDP) 75

Disconnecting 75

SMS encoding 76

Modes

Select an operating mode 78

Transparent operating mode 79

API operating mode 79

Bypass operating mode 79

Enter Bypass operating mode 80

Digi XBee3 Cellular LTE Cat 1 Smart Modem User Guide 5

Leave Bypass operating mode 80

Restore cellular settings to default in Bypass operating mode 80

USB direct mode 80

Enable USB direct mode 80

MicroPython mode 80

Sleep modes

About sleep modes 82

Normal mode 82

Pin sleep mode 82

Cyclic sleep mode 82

Cyclic sleep with pin wake up mode 82

Connected sleep mode 82

The sleep timer 83

MicroPython sleep behavior 83

Power saving features

Airplane mode 85

Serial communication

Serial interface 87

Serial data 87

UART data flow 87

Serial buffers 87

CTS flow control 88

RTS flow control 88

Enable UART or SPI ports 88

SPI operation

SPI communications 90

Full duplex operation 91

Low power operation 92

Select the SPI port 92

Force UART operation 93

Data format 93

File system

Overview of the file system 95

Directory structure 95

Paths 95

Secure files 95

XCTU interface 96

Encrypt files 96

Socket behavior

Supported sockets 98

Digi XBee3 Cellular LTE Cat 1 Smart Modem User Guide 6

Socket timeouts 98

Socket limits in API mode 98

Enable incoming TCP connections 98

API mode behavior for outgoing TCP and SSL connections 99

API mode behavior for outgoing UDP data 99

API mode behavior for incoming TCP connections 99

API mode behavior for incoming UDP data 100

Transparent mode behavior for outgoing TCP and SSL connections 100

Transparent mode behavior for outgoing UDP data 101

Transparent mode behavior for incoming TCP connections 101

Transparent mode behavior for incoming UDP connections 101

Transport Layer Security (TLS)

TLS AT commands 103

Transparent mode and TLS 104

API mode and TLS 104

Key formats 104

Certificate formats 104

Certificate limitations 104

Cipher suites 105

Server Name Indication (SNI) 105

AT commands

Special commands 107

AC (Apply Changes) 107

FR (Force Reset) 107

RE command 107

WR (Write) 107

Cellular commands 108

PH (Phone Number) 108

S# (ICCID) 108

IM (IMEI) 108

MN (Operator) 108

MV (Modem Firmware Version) 109

DB (Cellular Signal Strength) 109

AN (Access Point Name) 109

CP (Carrier Profile) 109

OA (Operating APN) 110

AM (Airplane Mode) 110

DV (Antenna Diversity) 110

Network commands 111

IP (IP Protocol) 111

TL (SSL/TLS Protocol Version) 111

$0 (SSL/TLS Profile 0) 112

$1 (SSL/TLS Profile 1) 112

$2 (SSL/TLS Profile 2) 112

TM (IP Client Connection Timeout) 113

TS (IP Server Connection Timeout) 113

DO (Device Options) 113

EQ (Remote Manager FQDN) 114

Addressing commands 114

SH (Serial Number High) 114

Digi XBee3 Cellular LTE Cat 1 Smart Modem User Guide 7

SL (Serial Number Low) 114

MY (Module IP Address) 114

P# (Destination Phone Number) 115

N1 (DNS Address) 115

N2 (DNS Address) 115

DL (Destination Address) 115

OD (Operating Destination Address) 116

DE (Destination Port) 116

C0 (Source Port) 116

LA (Lookup IP Address of FQDN) 116

Serial interfacing commands 117

BD (Baud Rate) 117

NB (Parity) 117

SB (Stop Bits) 118

RO (Packetization Timeout) 118

TD (Text Delimiter) 118

FT (Flow Control Threshold) 119

AP (API Enable) 119

I/O settings commands 119

D0 (DIO0/AD0) 119

D1 (DIO1/AD1) 120

D2 (DIO2/AD2) 120

D3 (DIO3/AD3) 121

D4 (DIO4) 121

D5 (DIO5/ASSOCIATED_INDICATOR) 122

D6 (DIO6/RTS) 122

D7 (DIO7/CTS) 123

D8 (DIO8/SLEEP_REQUEST) 123

P0 (DIO10/PWM0 Configuration) 124

P1 (DIO11/PWM1 Configuration) 124

P2 (DIO12 Configuration) 125

P3 (DIO13/DOUT) 125

P4 (DIO14/DIN) 126

PD (Pull Direction) 126

PR (Pull-up/down Resistor Enable) 126

M0 (PWM0 Duty Cycle) 127

I/O sampling commands 127

TP (Temperature) 128

IS (Force Sample) 128

Sleep commands 129

SM (Sleep Mode) 129

SP (Sleep Period) 129

ST (Wake Time) 129

SO (Sleep Options) 130

Command mode options 130

CC (Command Sequence Character) 130

CT (Command Mode Timeout) 130

CN (Exit Command mode) 131

GT (Guard Times) 131

MicroPython commands 131

PS (Python Startup) 131

PY (MicroPython Command) 132

Firmware version/information commands 132

VR (Firmware Version) 133

VL (Verbose Firmware Version) 133

Digi XBee3 Cellular LTE Cat 1 Smart Modem User Guide 8

HV (Hardware Version) 133

AI (Association Indication) 133

HS (Hardware Series) 134

CK (Configuration CRC) 134

Diagnostic interface commands 134

DI (Remote Manager Indicator) 134

CI (Protocol/Connection Indication) 135

Execution commands 137

NR (Network Reset) 137

!R (Modem Reset) 137

File system commands 137

Error responses 138

ATFS (File System) 138

ATFS PWD 138

ATFS CDdirectory 138

ATFS MDdirectory 139

ATFS LS [directory] 139

ATFS PUTfilename 139

ATFS XPUTfilename 139

ATFS HASHfilename 139

ATFS GETfilename 139

ATFS MVsource_pathdest_path 139

ATFS RMfile_or_directory 140

ATFS INFO 140

ATFSFORMAT confirm 140

Operate in API mode

API mode overview 142

Use the AP command to set the operation mode 142

API frame format 142

API operation (AP parameter = 1) 142

API operation with escaped characters (AP parameter = 2) 143

API frames

AT Command - 0x08 147

Transmit (TX) SMS - 0x1F 148

Transmit (TX) Request: IPv4 - 0x20 149

Tx Request with TLS Profile - 0x23 151

AT Command Response - 0x88 153

Transmit (TX) Status - 0x89 154

Modem Status - 0x8A 156

Receive (RX) Packet: SMS - 0x9F 157

Receive (RX) Packet: IPv4 - 0xB0 158

Configure the XBee Smart Modem using Digi Remote Manager

Create a Remote Manager account 160

Get the XBee Smart Modem IMEI number 160

Add a XBee Smart Modem to Remote Manager 160

Update the firmware 161

Update the firmware using web services 161

Digi XBee3 Cellular LTE Cat 1 Smart Modem User Guide 9

Example: update the XBee firmware synchronously with Python 3.0 161

Example: use the device's firmware image to update the XBee firmware synchronously 162

Troubleshooting

Cannot find the serial port for the device 165

Condition 165

Solution 165

Other possible issues 166

Enable Virtual COM port (VCP) on the driver 166

Correct a macOS Java error 167

Condition 167

Solution 167

Unresponsive cellular component in Bypass mode 168

Condition 168

Solution 168

Not on expected network after APN change 169

Condition 169

Solution 169

Syntax error at line 1 169

Solution 169

Error Failed to send SMS 169

Solution 169

Regulatory information

Modification statement 171

Interference statement 171

FCC Class B digital device notice 171

RF exposure 172

FCC-approved antennas 172

Bluetooth antennas 172

Dipole antennas 172

Flex PCB antennas 172

Cellular antennas 173

Labeling requirements for the host device 173

Digi XBee3 Cellular LTE Cat 1 Smart Modem User

Guide

The XBee Smart Modem contains a u-blox R410M-02B module that also supports NB-IoT. Digi has not

released support for the NB-IoT feature. Contact your sales representative if you would like more

information about our roadmap to support NB-IoT.

The XBee Smart Modem is an embedded Long-Term Evolution (LTE) Category 1 cellular module that

provides original equipment manufacturers (OEMs) with a simple way to integrate cellular

connectivity into their devices.

The XBee Smart Modem enables OEMs to quickly integrate cutting edge 4G cellular technology into

their devices and applications without dealing with the painful, time-consuming, and expensive FCC

and carrier end-device certifications.

With the full suite of standard XBee API frames and AT commands, existing XBee customers can

seamlessly transition to this new device with only minor software adjustments. When OEMs add the

XBee Smart Modem to their product, they create a future-proof design with flexibility to switch

between wireless protocols or frequencies as needed.

You can read some frequently asked questions here.

Applicable firmware and hardware

This manual supports the following firmware:

n310xx

It supports the following hardware:

nXB3-C-A1-UT-xxx

SIM cards

The XBee Smart Modem requires a 4FF (Nano) size SIM card. The SIM interface supports both 1.8 V

and 3 V SIM types.

Digi XBee3 Cellular LTE Cat 1 Smart Modem User Guide 10

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