Digi XBee3 DigiMesh 2.4 Manuale utente

Digi XBee3® Cellular LTE-M

Smart Modem

User Guide

Revision history—90002258

Revision Date Description

AMay

2018

Initial release of the document.

B June

2018

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

related changes.

C June

2018

Updated band specifications.

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-M Global Smart Modem User Guide 2

Contents

Digi XBee3 Cellular LTE-M Global Smart Modem User Guide

Applicable firmware and hardware 11

SIM cards 11

Getting started with the XBee Smart Modem Development Kit

Identify the kit contents 13

Connect the hardware 14

XBIB-U-DEV reference 16

Cellular service 17

Configure the device using XCTU 18

Add a device 18

Check for cellular registration and connection 19

Update to the latest firmware 19

Connect to the ELIZA server 21

Debugging 22

Connect to the Echo server 23

Debugging 24

Connect to the Daytime server 25

Debugging 26

Get started with MicroPython 26

About MicroPython 26

MicroPython on the XBee Smart Modem 27

Use XCTU to enter the MicroPython environment 27

Use the MicroPython Terminal in XCTU 27

Example: hello world 28

Example: turn on an LED 28

Exit MicroPython mode 29

Other terminal programs 30

Use picocom in Linux 31

More examples 32

Perform a (GET) HTTP request 33

Get started with CoAP 35

Connect to a TCP/IP address 39

Get started with MQTT 40

Software libraries 48

Technical specifications

Interface and hardware specifications 51

Digi XBee3 Cellular LTE-M Global Smart Modem User Guide 3

Digi XBee3 Cellular LTE-M Global Smart Modem User Guide 4

Cellular RF characteristics 51

Bluetooth RF characteristics 51

Cellular networking specifications 51

Power requirements 52

Power consumption 53

Electrical specifications 54

Regulatory approvals 55

Hardware

Mechanical drawings 57

Pin signals 57

Pin connection recommendations 59

RSSI PWM 59

SIM card 59

The Associate LED 60

Antenna recommendations

Antenna placement 62

Design recommendations

Cellular component firmware updates 64

USB Direct design 64

Power supply considerations 64

Minimum connection diagram 65

Heat considerations and testing 65

Cellular connection process

Connecting 68

Cellular network 68

Data network connection 68

Data communication with remote servers (TCP/UDP) 68

Disconnecting 68

Modes

Select an operating mode 71

Transparent operating mode 72

API operating mode 72

Bypass operating mode 72

Enter Bypass operating mode 73

Leave Bypass operating mode 73

Restore cellular settings to default in Bypass operating mode 73

USB direct mode 73

Configure the data pins 73

Enable USB direct mode 73

Command mode 74

Enter Command mode 74

Troubleshooting 74

Digi XBee3 Cellular LTE-M Global Smart Modem User Guide 5

Send AT commands 75

Response to AT commands 75

Apply command changes 75

Make command changes permanent 76

Exit Command mode 76

MicroPython mode 76

Sleep modes

About sleep modes 78

Normal mode 78

Pin sleep mode 78

Cyclic sleep mode 78

Cyclic sleep with pin wake up mode 78

SPI mode and sleep pin functionality 78

The sleep timer 79

MicroPython sleep behavior 79

Power saving features

Airplane mode 81

Power Saving Mode (PSM) 81

PSM behavior 81

Deep Sleep mode 81

Serial communication

Serial interface 83

Serial data 83

UART data flow 83

Serial buffers 84

CTS flow control 84

RTS flow control 84

Enable UART or SPI ports 84

SPI operation

SPI communications 87

Full duplex operation 88

Low power operation 89

Select the SPI port 89

Force UART operation 90

Data format 90

File system

Overview of the file system 92

Directory structure 92

Paths 92

Secure files 92

XCTU interface 93

Encrypt files 93

Digi XBee3 Cellular LTE-M Global Smart Modem User Guide 6

Socket behavior

Supported sockets 95

Socket timeouts 95

Socket limits in API mode 95

Enable incoming TCP sockets in API mode 95

API mode behavior for outgoing TCP and SSL connections 95

API mode behavior for outgoing UDP data 96

API mode behavior for incoming TCP connections 96

API mode behavior for incoming UDP data 97

Transparent mode behavior for outgoing TCP and SSL connections 97

Transparent mode behavior for outgoing UDP data 97

Transparent mode behavior for incoming TCP connections 98

Transparent mode behavior for incoming UDP connections 98

Transport Layer Security (TLS)

TLS AT commands 100

Transparent mode and TLS 101

API mode and TLS 101

Key formats 101

Certificate formats 101

Certificate limitations 101

Cipher suites 102

Server Name Indication (SNI) 102

AT commands

Special commands 104

AC (Apply Changes) 104

FR (Force Reset) 104

RE (Restore Defaults) 104

WR (Write) 104

Cellular commands 105

PH (Phone Number) 105

S# (ICCID) 105

IM (IMEI) 105

MN (Operator) 105

MV (Modem Firmware Version) 106

DB (Cellular Signal Strength) 106

AN (Access Point Name) 106

CP (Carrier Profile) 106

AM (Airplane Mode) 107

Network commands 107

IP (IP Protocol) 107

TL (SSL/TLS Protocol Version) 108

$0 (SSL/TLS Profile 0) 108

$1 (SSL/TLS Profile 1) 108

$2 (SSL/TLS Profile 2) 109

TM (IP Client Connection Timeout) 109

TS (IP Server Connection Timeout) 109

DO (Device Options) 109

EQ (Remote Manager FQDN) 110

Addressing commands 110

Digi XBee3 Cellular LTE-M Global Smart Modem User Guide 7

SH (Serial Number High) 111

SL (Serial Number Low) 111

MY (Module IP Address) 111

P# (Destination Phone Number) 111

N1 (DNS Address) 111

N2 (DNS Address) 112

DL (Destination Address) 112

OD (Operating Destination Address) 112

DE (Destination Port) 112

C0 (Source Port) 113

LA (Lookup IP Address of FQDN) 113

Serial interfacing commands 113

BD (Baud Rate) 113

NB (Parity) 114

SB (Stop Bits) 114

RO (Packetization Timeout) 115

TD (Text Delimiter) 115

FT (Flow Control Threshold) 115

AP (API Enable) 115

I/O settings commands 116

D0 (DIO0/AD0) 116

D1 (DIO1/AD1) 116

D2 (DIO2/AD2) 117

D3 (DIO3/AD3) 117

D4 (DIO4) 118

D5 (DIO5/ASSOCIATED_INDICATOR) 118

D6 (DIO6/RTS) 118

D7 (DIO7/CTS) 119

D8 (DIO8/SLEEP_REQUEST) 119

P0 (DIO10/PWM0 Configuration) 120

P1 (DIO11/PWM1 Configuration) 121

P2 (DIO12 Configuration) 121

P3 (DIO13/DOUT) 122

P4 (DIO14/DIN) 122

PD (Pull Direction) 122

PR (Pull-up/down Resistor Enable) 123

M0 (PWM0 Duty Cycle) 124

I/O sampling commands 124

TP (Temperature) 124

IS (Force Sample) 124

Sleep commands 125

SM (Sleep Mode) 125

SP (Sleep Period) 126

ST (Wake Time) 126

PA (Requested Active Timer) 126

PU (Requested Tracking Area Update Timer) 126

Command mode options 127

CC (Command Sequence Character) 127

CT (Command Mode Timeout) 127

CN (Exit Command mode) 127

GT (Guard Times) 128

MicroPython commands 128

PS (Python Startup) 128

PY (MicroPython Command) 128

Firmware version/information commands 129

Digi XBee3 Cellular LTE-M Global Smart Modem User Guide 8

VR (Firmware Version) 129

VL (Verbose Firmware Version) 129

HV (Hardware Version) 130

AI (Association Indication) 130

HS (Hardware Series) 130

CK (Configuration CRC) 131

Diagnostic interface commands 131

DI (Remote Manager Indicator) 131

CI (Protocol/Connection Indication) 131

Execution commands 133

NR (Network Reset) 133

!R (Modem Reset) 133

File system commands 133

Error responses 134

ATFS (File System) 134

ATFS PWD 134

ATFS CDdirectory 134

ATFS MDdirectory 135

ATFS LS [directory] 135

ATFS PUTfilename 135

ATFS XPUTfilename 135

ATFS HASHfilename 135

ATFS GETfilename 135

ATFS MVsource_pathdest_path 135

ATFS RMfile_or_directory 136

ATFS INFO 136

ATFSFORMAT confirm 136

Operate in API mode

API mode overview 138

Use the AP command to set the operation mode 138

API frame format 138

API operation (AP parameter = 1) 138

API operation with escaped characters (AP parameter = 2) 139

API frames

AT Command - 0x08 143

Transmit (TX) SMS - 0x1F 144

Transmit (TX) Request: IPv4 - 0x20 145

Tx Request with TLS Profile - 0x23 147

AT Command Response - 0x88 149

Transmit (TX) Status - 0x89 150

Modem Status - 0x8A 152

Receive (RX) Packet: SMS - 0x9F 153

Receive (RX) Packet: IPv4 - 0xB0 154

Configure the XBee Smart Modem using Digi Remote Manager

Create a Remote Manager account 156

Get the XBee Smart Modem IMEI number 156

Add a XBee Smart Modem to Remote Manager 156

Digi XBee3 Cellular LTE-M Global Smart Modem User Guide 9

Update the firmware 157

Update the firmware using web services 157

Example: update the XBee firmware synchronously with Python 3.0 157

Example: use the device's firmware image to update the XBee firmware synchronously 158

Troubleshooting

Cannot find the serial port for the device 161

Condition 161

Solution 161

Other possible issues 162

Enable Virtual COM port (VCP) on the driver 162

Correct a macOS Java error 163

Condition 163

Solution 163

Unresponsive cellular component in Bypass mode 164

Condition 164

Solution 164

Syntax error at line 1 164

Solution 164

Error Failed to send SMS 164

Solution 164

Network connection issues 165

Condition 165

Solution 165

Brownout issue 165

Voltage brownout 165

Power-on discontinuities 165

How to distinguish revision B parts 165

Hardware flow control in Bypass mode 166

Socket leaks 166

Condition 166

Solution 167

Regulatory information

United States (FCC) 169

OEM labeling requirements 169

FCC notices 169

FCC-approved antennas 170

RF exposure 171

Innovation, Science and Economic Development Canada (ISED) 171

Labeling requirements 171

RF Exposure 171

Digi XBee3 Cellular LTE-M Global Smart Modem User

Guide

The XBee Smart Modem provides OEMs with a simple way to integrate low-power cellular connectivity

into their devices.

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.

Features include:

nFCC certified and carrier end-device certified

nExcellent coverage and building penetration

nManage and configure with XCTU and Digi Remote Manager®

nAvailable with Digi provided SIM cards and data plans

nDigital I/O support

nAnalog input support

nAPI and Transparent mode

nCommand mode

nBypass to the raw cellular modem

nSMS—Verizon does not currently support SMS on LTE-M.

nTCP/UDP (up to six sockets)

nTLS (up to six sockets)

nIncoming connections

nMicroPython

lOn-module programmability to add local intelligence

lMany examples in the Digi MicroPython Programming Guide

lAT commands for managing run-time behavior

nLow power modes

nLTE power save mode (PSM)

nDeep sleep mode

nPin sleep support

nCyclic sleep support

Digi XBee3 Cellular LTE-M Global Smart Modem User Guide 10

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