Digi One SP User manual

User Guide
Digi Connect® Family and
ConnectPort® TS Family
Digi Connect Products: ConnectPort TS Products:
Digi Connect SP
Digi Connect Wi-SP
Digi Connect ME
Digi Connect ME 4 MB
Digi Connect Wi-ME
Digi Connect EM
Digi Connect Wi-EM
Digi Connect ES 4/8 SB
Digi Connect ES 4/8 SB with Switch
ConnectPort TS 8 and 16
ConnectPort TS 8 MEI and TS 16
MEI
ConnectPort TS 8 48VDC and TS
16 48VDC
ConnectPort TS 4x4

Digi Connect Family and ConnectPort TS Family User Guide 2
Revision history—90000565
Product documentation
To find up-to-date documentation for all Digi products, visit www.digi.com/documentation.
To provide feedback on this documentation, send your comments to [email protected].
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.
© 2016 Digi International. All rights reserved.
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 warranties online, visit www.digi.com/howtobuy/terms.
Customer 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, please contact us at 952.912.3456 or visit
www.digi.com/support.
If you have a customer account, sign in to the Customer Support Web Portal at www.digi.com/support/eservice.
Revision Date Description
N November 2012 Updated copyright and trademark information. Changed all instances of
developer.idigi.com to my.idigi.com.
P September 2013 Applied branding changes to all text strings, screen captures, command
options, and command output.
P1 April 2014 Updated Digi Connect ES 4/8 and Digi Connect 4/8 with Switch paragraph.
R June 2015 Added information on ConnectPort TS 16 MEI. Resolved documentation issues.
S April 2016 Added support for Connect Port TS 8 48VDC and TS 16 48VDC. Deleted
references to the Digi Device Setup Wizard. Removed references to Connect TS
W. Resolved documentation issues.

Digi Connect Family and ConnectPort TS Family User Guide 3
Contents
About this guide
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Where to find more information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Introduction
Important Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
The Digi Connect Family . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Digi Connect SP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Digi Connect Wi-SP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Digi Connect ME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Digi Connect Wi-ME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Digi Connect EM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Digi Connect Wi-EM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Digi Connect ES 4/8 SB and Digi Connect 4/8 SB with Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ConnectPort®TS products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ConnectPort TS 4x4 products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
User interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Configurable network services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
IP protocol support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
RealPort software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Modem emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Security features in Digi devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Configuration management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Customization capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Supported connections and data paths in Digi devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Network services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Network/serial clients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Interfaces for configuring, monitoring, and administering Digi devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Configuration capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Configuration interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Device Cloud interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Monitoring capabilities and interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Device administration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Hardware
Rack mounting (ConnectPort TS 16 models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Safety and installation considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Configuring
IP address assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Default IP address and DHCP settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Alternative methods of assigning IP addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Configure an IP address using DHCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Digi Connect Family and ConnectPort TS Family User Guide 4
Configure an IP address using Auto-IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Configure an IP address from the command-line interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
IP addresses and Device Cloud . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Test the IP address configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Locate the Digi Device through the Digi Device Discovery utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Download and run the Digi Device Discovery utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Discover devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Configuration through the web interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Open the web interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Web interface organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Change the IP address from the web interface, as needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Network configuration settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Serial port settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
GPIO pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
System settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Device Cloud settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Users settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Configuration through Device Cloud . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Alternative configuration options for Digi Connect Wi-SP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Configuration through the command line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Access the command line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Verify device support of commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Examples of configuration commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Configuration through Simple Network Management Protocol (SNMP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Batch capabilities for configuring multiple devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Monitoring and management
Monitoring capabilities from Device Cloud . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Monitoring capabilities in the web interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
System information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Serial port diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Manage connections and services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Monitoring capabilities from the command line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Commands for displaying device information and statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Commands for managing connections and sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Monitoring Capabilities from SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Device administration
Administration from the web interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
File management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Backup/restore device configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Update firmware and Boot/POST Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Restore a device configuration to factory defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Display system information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Activate Find Me LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Reboot the Digi device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Enable/disable access to network services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Restore device configuration to factory defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Administration from the command-line interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Digi Connect Family and ConnectPort TS Family User Guide 5
Latency Tuning
What is Latency? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Recommended Process for Deterministic Ethernet/IP Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Best-case scenario for achieving deterministic Ethernet/IP networking behavior . . . . . . . . . . . . . . . . . . . . 95
Step 1: Determine the characteristics of your application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Step 2: Determine the latency budget and type of latency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Step 3: Optimize the physical layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Step 4: Optimize the network and transport layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Command options for optimizing network and transport layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Considerations for using latency-related command options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Step 5: Optimize the application layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Specifications and certifications
Hardware specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
See hardware references for some Connect Family product specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Digi Connect ES specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
ConnectPort TS 8 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
ConnectPort TS 16 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
ConnectPort TS 4x4 and ConnectPort TS 4x2 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Wireless networking features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Regulatory information and certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
RF exposure statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
FCC certifications and regulatory information (USA only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Industry Canada (IC) certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
International EMC (Electromagnetic Emissions/Immunity/Safety) standards . . . . . . . . . . . . . . . . . . . . 105
Troubleshooting
Troubleshooting Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
System status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Digi Connect Family LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
ConnectPort TS Family Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Purpose
Full book title 6
About this guide
Purpose
This guide describes how to install, provision, configure, monitor, and administer Digi™ devices.
Audience
This guide is intended for those responsible for setting up Digi devices. It assumes some familiarity with networking
concepts and protocols.
Scope
This guide focuses on configuration, monitoring, and administration of Digi devices. It does not cover hardware
details beyond a certain level, application development, or customization of Digi devices.
Where to find more information
In addition to this guide, you can find additional product and feature information in these specific documents:
•Digi Connect ES Device Server Hardware Setup Guide
•RealPort® Installation Guide
•Digi Device Customization and Integration Guide
The product page for your product on the Digi website provides one or more of the following product-specific
documents:
•Release Notes
•Quick Start Guides
•Cabling Guides
•Digi Connect® Hardware Reference Guides
•Digi Device Cloud tutorials and user guides
For more additional information, see the following resources:
•Online help and tutorials in the web interface for the Digi device
•Digi Wiki for Developers
•Product information available on the Digi website, www.digi.com, and the Digi support site at www.digi.com/
support, including support forums, Knowledge Base, datasheets/product briefs, application/solution guides, and
carrier-specific documents
•Integration documentation: For customers who purchase the Digi Connect Integration Kit for product
customization, the Integration Kit includes such resources as development board schematics for module
products, firmware release notes, hardware reference manuals, specifications, and documentation for the
sample applications. For more information, see the document Getting Started with Digi Connect included with the
Integration Kit and accessed from the Start menu (Start > Digi Connect > Getting Started with Digi Connect).

Digi Connect Family and ConnectPort TS Family User Guide 7
Introduction
This chapter covers the following information:
•Digi devices and their product families
•Types of connections and data paths that Digi devices can use
•The interface options available for configuring, monitoring, and administering Digi devices
Important Safety Information
To avoid contact with electrical current:
•Never install electrical wiring during an electrical storm.
•Never install an Ethernet connection in wet locations unless that connector is specifically designed for wet
locations.
•Use caution when installing or modifying lines.
•Use a screwdriver and other tools with insulated handles.
•Wear safety glasses or goggles.
•Do not place Ethernet wiring or connections in any conduit, outlet or junction box containing electrical wiring.
•Installation of inside wire may bring you close to electrical wire, conduit, terminals and other electrical facilities.
Extreme caution must be used to avoid electrical shock from such facilities. Avoid contact with all such facilities.
•Ethernet wiring must be at least 6 feet from bare power wiring or lightning rods and associated wires, and at least
6 inches from other wire (antenna wires, doorbell wires, wires from transformers to neon signs), steam or hot
water pipes, and heating ducts.
•Do not place an Ethernet connection where it would allow a person to use an Ethernet device while in a bathtub,
shower, swimming pool, or similar hazardous location.
•Protectors and grounding wire placed by the service provider must not be connected to, removed, or modified by
the customer.
•Do not touch uninsulated Ethernet wiring if lightning is likely.
•External Wiring: Any external communications wiring installed needs to be constructed to all relevant electrical
codes. In the United States this is the National Electrical Code Article 800. Contact a licensed electrician for
details.
The Digi Connect Family
This section describes Digi Connect Family products.
Digi Connect SP
The Digi Connect SP (Single Port) device server is the ideal platform for custom web- and network-enabled
embedded applications. Combining Digi and NetSilicon technology, it eliminates the hardware design effort and
delivers a true device networking solution that is powerful enough to meet future performance requirements.
Built on NetSilicon 32-bit NET+ARM technology, the Digi Connect SP device server provides a powerful off-the-shelf
hardware platform for embedded web- and network applications with a seamless migration path to embedded
modules and a fully integrated NetSilicon system-on-chip solution using the family of Ethernet-enabled NET+ARM
microprocessors.

Digi Connect Family and ConnectPort TS Family User Guide 8
Digi Connect Wi-SP
The Digi Connect Wi-SP (Wireless Single Port) device server is a secure 802.11b wireless network solution. Combining
Digi and NetSilicon technology, configuration is simple without complex integration tools. The compact hardware
design delivers a powerful networking solution to meet performance requirements.
Built on NetSilicon 32-bit NET+ARM technology, the Digi Connect Wi-SP device server provides a powerful off-the-
shelf hardware platform for embedded web- and network applications with a seamless migration path to embedded
modules and a fully integrated NetSilicon system-on-chip solution using the family of Ethernet-enabled NET+ARM
microprocessors.
Digi Connect ME
The Digi Connect ME (Micro Embedded) device server enables manufacturers to keep pace with evolving networking
technology by easily adding web-enabled network connectivity to existing products. This network connectivity is
provided without the added complexities of extensive hardware and software integration, and at a fraction of the
time and cost that would be required to develop a custom solution.
Built on leading 32-bit ARM technology using the network-attached NetSilicon NS7520 microprocessor, the Digi
Connect ME combines plug-and-play functionality with the freedom and flexibility of complete product
customization options. These options are based on the NetSilicon NET+Works® development platform. This platform
offers a migration path to a fully integrated NetSilicon system-on-chip solution.
You can use the Digi Connect ME Integration Kit customize the look-and-feel of the device interface.
Digi Connect Wi-ME
The Digi Connect Wi-ME (Wireless Micro Embedded) is a fully customizable and secure 802.11b wireless device server.
It is pin-compatible with the Digi Connect ME, and makes fully transparent 802.11b integration possible without the
traditional complexities of hardware and software integration work.It is based on the common platform design
approach of the Digi Connect family of embedded products, which minimizes design risk and reduces time to market
by allowing customers to easily accommodate both wired and wireless network functionality in a single future-proof
product design. Built on NetSilicon 32-bit NET+ARM technology, the Digi Connect Wi-ME embedded module offers a
migration path to a fully integrated NetSilicon system-on-chip solution. It combines plug-and-play functionality with
the freedom and flexibility of complete software customization using the NetSilicon NET+Works development
platform. You can use the Digi Connect Wi-ME Integration Kit to customize the look-and-feel of the device interface.
Digi Connect EM
The Digi Connect EM (Embedded Module) device server delivers web-enabled device networking that is easy and
cost-effective to implement, while being powerful enough to meet future performance needs. Built on 32-bit ARM
technology using the network-attached NetSilicon NS7520 microprocessor and featuring a wide variety of
connectivity options, the Digi Connect EM provides the freedom and flexibility of complete custom product
development. You can use the Digi Connect EM Integration Kit to customize the look-and-feel of the device interface.
Digi Connect Wi-EM
The Digi Connect Wi-EM (Wireless Embedded Module) device server is a fully customizable and secure 802.11b
wireless embedded module that provides integration flexibility in a variety of connection options. It is pin-compatible
with the Digi Connect EM, and makes fully transparent 802.11b integration possible without the traditional
complexities of hardware and software integration work.Based on the common platform design approach of the Digi
Connect family of embedded products, the Digi Connect Wi-EM minimizes design risk and reduces time to market by
allowing you to easily accommodate both wired and wireless network functionality in a single future-proof product

Digi Connect Family and ConnectPort TS Family User Guide 9
design. Built on NetSilicon 32-bit NET+ARM technology, the Digi Connect Wi-EM combines plug-and-play functionality
with the freedom and flexibility of complete software customization using the NetSilicon NET+Works development
platform, and offers a seamless migration path to a fully integrated NetSilicon system-on-chip solution. You can use
the Digi Connect Wi-EM Integration Kit to customize the look-and-feel of the device interface.
Digi Connect ES 4/8 SB and Digi Connect 4/8 SB with Switch
The Digi Connect ES is a high performance high-reliability serial-to-Ethernet concentrator designed with extended
safety characteristics. The Digi Connect ES allows connection of sensitive RS-232 enabled devices to the network,
sending data to a Data Management System. Models include DC-ES-4 series (4 port serial-to-Ethernet) and DC-ES-8
series (8 port serial to Ethernet). The product is compliant with IEC 60601-1 3rd edition and provides Galvanically
isolated RS-232 serial and Ethernet ports.
Galvanic isolation provides extended electrical safety. There is no electrical path for current to earth ground,
ensuring no electrical shock when making physical contact with the Digi Connect ES. There is no electrical path from
port to port, ensuring a ground fault will not affect the operation of the Digi Connect ES or the operation of any device
connected to it.
Digi’s patented RealPort technology makes it possible to establish a connection between the host and a networked
serial device by creating a local COM or TTY port on the host computer. Incoming/outgoing and telnet sessions on
each port give system administrators a high level of control over networked serial devices.
ConnectPort®TS products
Digi ConnectPort TS (Terminal Server) products provide serial over Ethernet connectivity for applications today and
into the future. They support IPv4 and IPv6 Ethernet protocols. The Digi ConnectPort TS 8 MEI product is the same
size as the Digi ConnectPort TS 8 (RS-232 only) and is the smallest 8-port device with a Multiple Electrical Interface
(MEI) in the industry. The ConnectPort TS 16 and ConnectPort TS 16 MEI are 1U Rack-mountable products.
ConnectPort TS 4x4 products
ConnectPort TS 4x4 products are device server products that not only provide serial over Ethernet connectivity, but
additional Ethernet ports allow this product to act as an Ethernet switch in conjunction with a serial port server. The
4x4 has 4 Ethernet ports. Both products have 4 RS-232 serial ports. Applications include utilities, precision
equipment, industrial automation, banking, retail, traffic as well as many more. The Python development
environment allows you to create custom applications to run on the device. Simple configuration management is
available through the web browser, command-line interface; in addition, the Device Cloud platform allows for setup,
configuration, reporting and monitors of large installations.
Features
This is an overview of key features in Digi devices. The next three chapters cover firmware features in more detail. See
Specifications and certifications on page 99 for hardware specifications.
User interfaces
There are several user interfaces for configuring and monitoring Digi devices, including:
•Device Cloud
•A web-based interface for configuring, monitoring, and administering Digi devices.
•A command-line interface available via local serial port, telnet or SSH.
•Configuration through Remote Command Interface (RCI) over the serial port.

Digi Connect Family and ConnectPort TS Family User Guide 10
•Simple Network Management Protocol (SNMP).
Configurable network services
You can enable or disable access to network services. This means that you can restrict a device’s use of network
services to those strictly needed by the device. To improve device security, you can disable non-secure services. You
can enable or disable the following network services:
•Advanced Digi Discovery Protocol (ADDP): you can enable or disable ADDP, but you cannot change its network
port number.
•RealPort
•Encrypted RealPort
•HTTP/HTTPS
•Line Printer Daemon (LPD)
•Remote login (rlogin)
•Remote shell (rsh)
•Simple Network Management Protocol (SNMP)
•Telnet
•Socket connectivity to the serial ports (for example, reverse telnet, reverse SSH, raw socket, and UDP)
In the web interface, you can enable or disable access to network services on the Network Services page of Network
Configuration. For more information, see Network services settings on page 38. You can also enable or disable
network services from the command-line interface by using the set service command. See the Digi Connect Family
Command Reference for the set service command description.
IP protocol support
All Digi devices include an on-board TCP/IP stack with a built-in web server. Supported protocols vary by specific
product and include, unless otherwise noted:
•Transmission Control Protocol (TCP)
•User Datagram Protocol (UDP)
•Dynamic Host Configuration Protocol (DHCP)
•Simple Network Management Protocol (SNMP)
•Secure Sockets Layer (SSL)/Transport Layer Security (TLS)
•Telnet Com Port Control Option (telnet) including support of RFC 2217 (ability to control serial port through
telnet). See Serial data communication over TCP and UDP on page 11 for additional information.
•Remote login (rlogin)
•Line Printer Daemon (LPD)
•HyperText Transfer Protocol (HTTP)/HyperText Transfer Protocol over Secure Socket Layer (HTTPS)
•Simple Mail Transfer Protocol (SMTP)
•Internet Control Message Protocol (ICMP)
•Internet Group Management Protocol (IGMP)
•Address Resolution Protocol (ARP)
•Advanced Digi Discovery Protocol (ADDP)

Digi Connect Family and ConnectPort TS Family User Guide 11
•Network Address Translation (NAT)/Port Forwarding (only some products have NAT)
The following sections provide an overview of some of the services provided by these protocols.
Serial data communication over TCP and UDP
Digi devices support serial data communication over TCP and UDP. The key features include:
•Serial data communication over TCP, also known as autoconnect and tcpserial can automatically perform the
following functions:
Establish bidirectional TCP connections, known as autoconnections, between the serial device and a server or
other network device. Autoconnections are based on data and or serial hardware signals.
Control forwarding characteristics based on size, time, and pattern.
Allow incoming raw, telnet, and SSL/TLS (secure-socket) connections.
Support RFC 2217, an extension of the telnet protocol.
•Serial data communication over UDP, also known as udpserial, can automatically perform the following
functions:
Digi Connect products can automatically send serial data to one or more devices or systems on the network
using UDP sockets. Options for sending data include whether specific data is on the serial line, a specific time
period has elapsed, or after the specified number of bytes has been received on the serial port.
Control forwarding characteristics based on size, time, and patterns.
Support incoming datagrams from multiple destinations.
Support outgoing datagrams sent to multiple destinations.
•TCP/UDP forwarding characteristics.
•Extended communication control on TCP/UDP data paths.
Timeout
Hangup
User-configurable Socket ID string (text string identifier on autoconnect only)
Dynamic Host Configuration Protocol (DHCP)
You can use Dynamic Host Configuration Protocol (DHCP) to automatically assign IP addresses, deliver TCP/IP stack
configuration parameters such as the subnet mask and default router, and provide other configuration information.
For more details, see Configure an IP address using DHCP on page 25.
Auto-IP
The Auto-IP protocol automatically assigns an IP address from a reserved pool of standard Auto-IP addresses to the
computer on which it is installed. Digi devices automatically obtain their IP addresses from a DHCP server. If the
DHCP server is unavailable or nonexistent, Auto-IP assigns the device an IP address. For more details, see Configure
an IP address using Auto-IP on page 26.
Simple Network Management Protocol (SNMP)
Simple Network Management Protocol (SNMP) manages and monitors network devices. The SNMP architecture
enables a network administrator to manage:
•Nodes—servers, workstations, routers, switches, hubs, etc.—on an IP network

Digi Connect Family and ConnectPort TS Family User Guide 12
•Network performance, find and solve network problems, and plan for network growth.
Digi devices support SNMP Versions 1 and 2.
For more information on SNMP as a device-management interface, see Simple Network Management Protocol
(SNMP) on page 20. For a list of SNMP-related of supported Request for Comments (RFCs) and Management
Information Bases (MIBs), see Supported standard RFCs and MIBs on page 57.
Secure Sockets Layer (SSL)/Transport Layer Security (TLS)
Secure Sockets Layer (SSL)/Transport Layer Security (TLS) provides authentication and encryption for Digi devices.
For more information, see Security features in Digi devices on page 14.
Telnet
Digi devices support the following types of telnet connections:
•Telnet client
•Telnet server
•Reverse telnet, often used for console management or device management
•Telnet autoconnect
•RFC 2217, Telnet Com Port Control Option, an extension of the telnet protocol
For more information on these connections, see Supported connections and data paths in Digi devices on page 15.
You can enable or disable access to telnet network services.
Remote login (rlogin)
Users can perform logins to remote systems (rlogin). You can enable or disable access to rlogin service.
Line Printer Daemon (LPD)
The Line Printer Daemon (LPD) allows network printing over a serial port. Each serial port has a dedicated LPD server
that is independently configurable. You can enable or disable access to LPD service.
HyperText Transfer Protocol (HTTP)
HyperText Transfer Protocol over Secure Socket Layer (HTTPS)
Digi devices provide web pages for configuration that you can secure by requiring a user login.
Internet Control Message Protocol (ICMP)
You can display ICMP statistics, including the number of messages received, bad messages received, and destination
unreachable messages received.
Point-to-Point Protocol (PPP)
The Point-to-Point Protocol (PPP) transports multi-protocol packets over point-to-point links. PPP encapsulates the
data packet, allows the server to inform the dial-up client of its IP address (or client to request the IP address),
authenticates the exchange, negotiates multiple protocols, and reassembles the data packet for network
communication.
Advanced Digi Discovery Protocol (ADDP)

Digi Connect Family and ConnectPort TS Family User Guide 13
The Advanced Digi Discovery Protocol (ADDP) runs on any operating system capable of sending multicast IP packets
on a network. ADDP allows the system to identify all ADDP-enabled Digi devices attached to a network by sending out
a multicast packet. The Digi devices respond to the multicast packet and identify themselves to the client sending the
multicast.
ADDP communicates with the TCP/IP stack using UDP. The TCP/IP stack should be able to receive multicast packets
and transmit datagrams on a network.
Not all Digi devices support ADDP. You can enable or disable access to ADDP service, but you cannot change the
network port number for ADDP from its default.
RealPort software
Digi devices use the patented RealPort COM/TTY port redirection for Microsoft Windows, UNIX, and Linux
environments. RealPort software provides a virtual connection to serial devices, no matter where they reside on the
network. The software is installed directly on the host computer and allows applications to talk to devices across a
network as though the devices were directly attached to the host. Actually, the devices are connected to a Digi device
somewhere on the network. RealPort is unique among COM port re-directors because it is the only implementation
that allows multiple connections to multiple ports over a single TCP/IP connection. Other implementations require a
separate TCP/IP connection for each serial port. Unique features also include full hardware and software flow
control, as well as tunable latency and throughput. You can enable or disable access to RealPort services.
Encrypted RealPort
Digi devices also support RealPort software with encryption. Encrypted RealPort offers a secure Ethernet connection
between the COM or TTY port and a device server or terminal server. Encryption prevents internal and external
snooping of data across the network by encapsulating the TCP/IP packets in a Secure Sockets Layer (SSL) connection
and encrypting the data using Advanced Encryption Standard (AES), one of the most efficient security algorithms.
You can enable or disable access to Encrypted RealPort services. Digi’s RealPort with encryption driver has earned
Microsoft’s Windows Hardware Quality Lab (WHQL) certification. Drivers are available for a wide range of operating
systems, including Microsoft Windows and Linux x32 and x64 based operating systems, as well as other versions of
Unix. See the RealPort Compatibility OS List in the Digi Knowledge Base for a detailed list of supported operating
systems. It is ideal for financial, retail/point-of-sale, government or any application requiring enhanced security to
protect sensitive information.
Alarms
You can configure Digi devices to issue alarms, in the form of email messages or SNMP traps, when certain device
events occur, including changes in GPIO signals, data patterns detected in the data stream. Configuring Digi devices
to issue alarms allows you to know when events occur. You can also forward Alarms to Device Cloud for display and
management in that platform. For more information on configuring alarms, see Alarms on page 53.
Modem emulation
Digi devices include a configuration profile that allows the device to emulate a modem. Modem emulation sends and
receives modem responses to a serial device over TCP/IP (including Ethernet) instead of Public Switched Telephone
Network (PSTN). The modem emulation profile allows you to maintain a current software application but using it
over the less expensive Ethernet network. In addition, you can enable or disable telnet processing on the incoming
and outgoing modem-emulation connections. For information on the modem-emulation commands that Digi
devices support, see the Digi Connect Family Command Reference.

Digi Connect Family and ConnectPort TS Family User Guide 14
Security features in Digi devices
This section covers the following information:
•Secure access and authentication
•Encryption
•SNMP security
•Network port scan cloaking
Secure access and authentication
•One password, one permission level.
•You can issue passwords to device users.
•Selective enabling/disabling network services such as ADDP, RealPort, Encrypted RealPort, HTTP/HTTPS, LPD,
remote login, remote shell, SNMP, and telnet.
•Can control access to inbound ports.
•Can control access to specific devices, IP addresses, or networks through IP filtering.
•Secure sites for configuration: HTML pages for configuration have appropriate security.
•User and user group access permissions, which control user access to various features and the level of control
they have over them (view settings or change settings).
Encryption
•Encrypted RealPort offers encryption for the Ethernet connection between the COM/TTY port and the Digi device.
Encryption prevents internal and external snooping of data across the network by encapsulating the TCP/IP
packets in a Secure Sockets Layer (SSL) connection and encrypting the data using the Advanced Encryption
Standard (AES) security algorithm.
•Strong Secure Sockets Layer (SSL) V3.0/ Transport Layer Security (TLS) V1.0-based encryption: DES (64-bit), 3DES
(192-bit), AES (128-/192-/256-bit), IPsec ESP: DES, 3DES, AES.
•Wireless Digi Connect products provide Wi-Fi Protected Access (WPA/WPA2/802.11i) and Wired Equivalent Privacy
(WEP) encryption (64-/128-bit). Supported WPA/WPA2/802.11i authentication methods are:
Supported WPA authentication methods
EAP-TLS PEAP EAP/TTLS
LEAP
(WEP only)
EAP-PEAP/MSCHAPv2 (both PEAPv0 and PEAPv1)
EAP-PEAP/TLS (both PEAPv0 and PEAPv1)
EAP-PEAP/GTC (both PEAPv0 and PEAPv1)
EAP-PEAP/OTP (both PEAPv0 and PEAPv1)
EAP-PEAP/MD5-Challenge (both PEAPv0 and
PEAPv1)
EAP-TTLS/EAP-MD5-Challenge
EAP-TTLS/EAP-GTC
EAP-TTLS/EAP-OTP
EAP-TTLS/EAP-MSCHAPv2
EAP-TTLS/EAP-TLS
EAP-TTLS/MSCHAPv2
EAP-TTLS/MSCHAP
EAP-TTLS/PAP
EAP-TTLS/CHAP

Digi Connect Family and ConnectPort TS Family User Guide 15
SNMP security
You can disable SNMP “set” commands to use SNMP read-only. Changing public and private community names is
recommended to prevent unauthorized access to the device.
Configuration management
Once a Digi device is configured and running, you need to periodically perform the following configuration-
management tasks:
•Upgrading firmware
•Copying configurations to and from a remote host
•Software and factory resets
•Rebooting the device
•Memory management
•File management
For more information on these configuration-management tasks, see Device administration on page 89.
Customization capabilities
You can customize several aspects of Digi devices. For example, you can:
•Customize the appearance of the device interface by changing the company logo or screen colors.
•Run custom Python applications.
•Define the custom factory defaults that the devices use to restore factory default settings.
The Digi Device Customization and Integration Guide describes customization and integration tools and processes.
Contact Digi International for more information on the Digi Connect Integration Kit customization tools and
resources and for assistance with customization efforts.
The Digi Connect Integration Kit also provides a platform for evaluation, rapid prototyping, and integration of Digi
Connect embedded modules with plug-and-play firmware. It includes tools, sample code, and documentation to
help with product integration and web-based customization efforts.
Supported connections and data paths in Digi devices
Digi devices allow for several kinds of connections and paths for data flow between the Digi device and other entities.
You can group these connections into two main categories:
•Network services, in which a remote entity initiates a connection to a Digi device.
•Network/serial clients, in which a Digi device initiates a network connection or opens a serial port for
communication.
The following section describes the effects of enabling certain features and choosing certain settings when
configuring Digi products.
Network services
A network service connection is a situation where a remote entity initiates a connection to a Digi device. There are
several categories of network services:
•Network services associated with specific serial ports

Digi Connect Family and ConnectPort TS Family User Guide 16
•Network services associated with serial ports in general
•Network services associated with the command-line interface (CLI)
Network services associated with specific serial ports
•Reverse telnet: A remote entity establishes telnet connection to a Digi device. Data passes transparently between
the telnet connection and a named serial port.
•Reverse raw socket: A remote entity establishes a raw TCP socket connection a Digi device. Data passes
transparently between the socket and a named serial port.
•Reverse TLS socket: An remote entity establishes an encrypted raw TCP socket to a Digi device. Data passes
transparently to and from a named serial port.
•LPD: A remote entity establishes a TCP connection to a named serial port. The Digi device interprets the LPD
protocol and sends a print job out of the serial port.
•Modem emulation, also known as pseudo-modem (pmodem): A remote entity establishes a TCP connection to a
named serial port. This connection is “interpreted” as an incoming call to the pseudo-modem.
Network services associated with serial ports in general
•RealPort: A single TCP connection manages (potentially) multiple serial ports.
•Modem emulation, also known as pseudo-modem (pool): A TCP connection to the “pool” port is interpreted as
an incoming call to an available pseudo-modem in the “pool” of available port numbers.
•rsh: Digi devices support a limited implementation of the remote shell (rsh) protocol, in that a single service
listens to connections and allows a command to be executed. Only one class of commands is allowed: a single
integer that specifies which serial port to connect to. Otherwise, the resulting connection is somewhat similar to a
reverse telnet or reverse socket connection.
•Reverse SSH: An encrypted tcp socket is available for each port that provides a direct connection to the
designated serial port.
•Reverse telnet: A telnet unencrypted socket is available for each serial port that provides a telnet style
connection directly to the serial port.
•Raw TCP: A raw TCP unencrypted socket is available for each serial port that provides an 8 bit clean connection to
the serial port
•SSL: An SSL encrypted Raw TCP raw TCP socket is available for each serial port that provides an 8 bit clean
connection to the serial port.
Network services associated with the command-line interface
•Telnet: A user can telnet directly to a Digi device’s command-line interface.
•Rlogin: A user can perform a remote login (rlogin) to a Digi device’s command-line interface.
Network/serial clients
A network/serial client connection is a situation where a Digi device initiates a network connection or opens a serial
port for communication. There are several categories of network/serial client connections:
•Autoconnect behavior client connections
•Command-line interface (CLI)-based clients
•Modem emulation (pseudo-modem) client connections

Digi Connect Family and ConnectPort TS Family User Guide 17
Autoconnect behavior client connections
In client connections that involve autoconnect behaviors, a Digi device initiates a network connection based on
timing, serial activity, or serial modem signals. Autoconnect-related client connections include:
•Raw TCP connection: The Digi device initiates a raw TCP socket connection to a remote entity.
•Telnet connection: The Digi device initiates a TCP connection using the telnet protocol to a remote entity.
•Raw TLS encrypted connection: The Digi device initiates an encrypted raw TCP socket connection to a remote
entity.
•Rlogin connection: The Digi device initiates a TCP connection using the rlogin protocol to a remote entity.
Command-line interface (CLI)-based client connections
Command-line interface based client connections are available for use once a user has established a session with the
Digi device’s CLI. CLI-based client connections include:
•Telnet: A connection is made to a remote entity using the telnet protocol.
•Rlogin: A connection is made to a remote entity using the rlogin protocol.
•Connect: Begin communicating with a local serial port.
Modem emulation (pseudo-modem) client connections
When a port is in the modem-emulation or pseudo-modem mode, it can initiate network connections based on AT
command strings received on the serial port. See the Digi Connect Family Command Reference for modem emulation
AT commands.
Interfaces for configuring, monitoring, and administering Digi
devices
There are several interfaces for configuring, monitoring, and administering Digi devices.
Configuration capabilities
Device configuration involves setting values and enabling features for such areas as:
•Network configuration: Specifying the device’s IP address settings, network-service settings, and advanced
network settings.
•Serial port configuration: Specifying the serial port characteristics for the device.
•GPIO pin configuration (for Connect ME and Connect EM devices): Specifying how to use the various GPIO pins for
the device.
•Alarms: Defining when to issue alarms, the conditions that trigger alarms, and how to deliver the alarms.
•Security/Users configuration: Configuring security features, such as whether to require password authentication
for device users.
•System configuration: Specifying system-identifying information, such as a device description, contact person,
and physical location.
Configuration interfaces
Several interfaces are available for configuring Digi devices, including:
•The Digi Device Discovery Utility, which locates Digi devices on a network, and allows you to open the web
interface for the devices.

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•Device Cloud, a configuration interface to manage and monitor devices. Device Cloud cannot assign an IP address
but it can change one.
•A web-based interface embedded with the product, providing device configuration profiles for quick serial-port
configuration and other settings.
•A command-line interface (CLI).
•Remote Command-line Interface (RCI) protocol.
•Simple Network Management Protocol (SNMP).
Digi Device Discovery utility
The Digi Device Discovery utility locates Digi devices on a network and allows you to open the web interface for
discovered devices, configure network settings, and reboot the device. It uses a Digi International-proprietary
protocol, Advanced Digi Discovery Protocol (ADDP), to discover the Digi devices on a network, and displays the
discovered devices in a list.
Digi Device Discovery quickly locates Digi devices and basic device information, such as the device’s address,
firmware revision, and whether it has been configured. It runs on any operating system that can send multicast IP
packets to a network. It sends out a User Datagram Protocol (UDP) multicast packet to all devices on the network.
Devices supporting ADDP reply to this UDP multicast with their configuration information. Even devices that do not
yet have an IP address assigned or are misconfigured for the subnet can reply to the UDP multicast packet and be
displayed in device discovery results.
Not all Digi devices support ADDP. Note that personal firewalls can block device discovery, Virtual Private Network
(VPN) software, and certain network equipment. Firewalls will block UDP ports 2362 and 2363 that ADDP uses to
discover devices. You can enable or disable access to the ADDP service, but you cannot change the network port
number for ADDP. For information on launching and using Digi Device Discovery, see Alternative configuration
options for Digi Connect Wi-SP on page 73.
Device Cloud interface
Digi Device Cloud is a software-as-a-service platform that empower IT, network operations and customer support
organizations to manage the vast array of equipment in their device networks. As a network grows, the complexity of
effectively managing the network assets grows exponentially. Device Cloud provides functionality that helps to
manage the universal problems of a dynamic device network:
•Centralized control over large numbers of devices
•Reducing service complexity
•Maintaining high levels of security
•Provisioning and decommissioning of equipment
•Adding functionality to device networks
Additionally, you can group devices together, schedule various operations, and set alarm notifications. For example,
you can set an alarm to send a notification if a device disconnects or remains connected longer than a specified
period.
Some things to note about using Device Cloud:
•Devices must be registered in a Device Cloud account before you can access them.
•To minimize network traffic, Device Cloud uses caching. As a result, device settings can be out-of-sync between
the device and the settings viewed on the console.
•Device information refreshes on demand when the device is connected, and refreshes automatically when a
device connects.

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For more information on Device Cloud as a remote device network management solution, see these resources:
•Device Cloud User Guide
•Device Cloud Programming Guide
•Device Cloud tutorials and other documents available on Digi’s Knowledge Base
Web interface
Digi provides a web interface that you can use to configure and monitor Digi devices. Configurable features are
grouped into several categories. These categories vary by product; examples include Network, Serial Port, Alarms, and
System. Most of the configurable features are arranged by most basic settings on a page, with associated and
advanced settings accessible from that page. Serial-port configurations are classified into port profiles, or
configuration scenarios that best represents the environment in which you use the Digi device. Selecting a particular
port profile configures the serial port parameters that are needed. To access the web interface, type the Digi device’s
IP address or host name in a browser’s URL window. The main menu on the web interface appears. For more
information, see Configuration through the web interface on page 28. From web interface, you can access a tutorial
from the Home page and the online help from the Help link on each page. Not all settings provided by the command-
line interface appears in the web interface. However, the configuration settings in the web interface should be
sufficient for most users. If necessary, you can modify settings later from the command line.
Command-line interface
You can configure Digi devices by issuing commands from the command line. The command-line interface allows
communication directly with a Digi device without a graphical interface. To access the command line from the Digi
Device Discovery utility, click Telnet to command line.
For example, you can issue the following command from the command line to set general serial configuration
options:

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#> set serial baudrate=9600 flowcontrol=hardware
The command-line interface provides flexibility for making precise changes to device configuration settings and
operation. It requires you to have experience issuing commands and access to command documentation.
You can access the command line through telnet or SSH TCP/IP connections, or through serial port using terminal
emulation software such as Hyperterminal. Access to the command line from serial ports depends on the port profile
in use by the port. By default, serial port command-line access is allowed.
See Configuration through the command line on page 75 for more information on this interface. See the Digi Connect
Family Command Reference for command descriptions and examples of entering configuration commands from the
command-line interface. In addition, you can access online help for the commands by issuing the help and ‘?’
commands.
Remote Command Interface (RCI)
The Remote Command Interface (RCI) is a programmatic interface for configuring and controlling Digi devices. RCI is
an XML-based request/response protocol that allows a caller to query and modify device configurations, access
statistics, reboot the device, and reset the device to factory defaults. Unlike other configuration interfaces that are
designed for a user, such as the command-line or web interfaces, a program can use RCI. RCI access consists of
program calls. For example, a custom application running on a computer that monitors and controls an installation
of many Digi devices.
You can use RCI to create a custom configuration user interface, or utilities that configure or initialize devices through
external programs or scripts.
RCI uses HTTP as the underlying transport protocol. Depending on the network configuration, use of HTTP as a
transport protocol could be blocked by some firewalls.
RCI is quite complex to use, requiring users to phrase configuration requests in Extensible Markup Language (XML)
format. It is a “power-user” option, intended for users who develop their own user interfaces, or implement
embedded control (and thus potentially using RCI over serial) than for end-users with limited knowledge of device
programming.
Not all actions in the web interface have direct equivalents in RCI.
For more details on RCI, see the Digi Connect Integration Kit and the Remote Command Interface (RCI) Specification.
Simple Network Management Protocol (SNMP)
Simple Network Management Protocol (SNMP) manages and monitors network devices. The SNMP architecture
enables a network administrator to manage:
•Nodes—servers, workstations, routers, switches, hubs, etc.—on an IP network
•Network performance, find and solve network problems, and plan for network growth.
Digi devices support SNMP Versions 1 and 2.
SNMP is easy to implement in extensive networks. You can program new variables and “drop in” new devices in a
network. SNMP is widely used. It is a standard interface that integrates well with network management stations in an
enterprise environment.
However, because device communication is UDP-based, the communication is not secure. If you require more secure
communications with a device, use an alternate device interface. SNMP does not allow for certain task that can be
performed from the web interface, such as file management, uploading firmware, or backing up and restoring
configurations. Compared to the web or command-line interfaces, SNMP is limited in its ability to set specific
parameters, such as set port profile, is not possible.