Lantronix 900-588 User Manual

Micro125 User Guide

Part Number 900-588

Revision B March 2013

March 2011

A

6.7.0.2

Initial release

March 2013

B

6.8.0.4

Updated for firmware release 6.8.0.4.

Copyright and Trademark

© 2013 Lantronix, Inc. All rights reserved. No part of the contents of this book may be
transmitted or reproduced in any form or by any means without the written permission of
Lantronix, Inc.

Lantronix® and DeviceLinx® are registered trademarks of Lantronix, Inc. DeviceInstaller™ is
a trademark of Lantronix, Inc.

Windows® and Internet Explorer® are registered trademarks of Microsoft Corporation
Mozilla® and Firefox® are registered trademarks of the Mozilla Foundation. Chrome™ is a
trademark of Google, Inc. All other trademarks and trade names are the property of their
respective holders.

Warranty

For details on the Lantronix warranty replacement policy, please go to our Web site at

www.lantronix.com/support/warranty.

Contacts

Lantronix Corporate Headquarters

167 Technology Drive
Irvine, CA 92618, USA

Toll Free: 800-526-8766
Phone: [phone]
Fax: [phone]

Technical Support
Online:

Sales Offices
For a current list of our domestic and international sales offices, go to the Lantronix web site
at

www.lantronix.com/support

www.lantronix.com/about/contact.

Disclaimer

Operation of this equipment in a residential area is likely to cause interference, in which case
the user, at his or her own expense, will be required to take whatever measures may be
required to correct the interference.

Note: Changes or modifications to this device not explicitly approved by Lantronix will void

the user's authority to operate this device.

Revision Histor y

Date Rev. Firmware Comments

For the latest revision of this product document, please check our online documentation at

www.lantronix.com/support/documentation.

Micro125 User Guide 2

Table of Contents

Copyright and Trademark ______________________________________________ 2
Warranty ___________________________________________________________ 2
Contacts ___________________________________________________________ 2
Disclaimer __________________________________________________________ 2
Revision History _____________________________________________________ 2
List of Figures _______________________________________________________ 6
List of Tables _______________________________________________________ 6

1. Using This Guide 7

Purpose and Audience ________________________________________________ 7
Chapter Summary ___________________________________________________ 7
Additional Documentation______________________________________________ 8

2. I

ntroduction 9

Capabilities _________________________________________________________ 9
Applications ________________________________________________________ 9
Protocol Support ____________________________________________________ 10
Configuration Methods _______________________________________________ 10
Addresses and Port Numbers _________________________________________ 10

Hardware Address _______________________________________________ 10
IP Address _____________________________________________________ 11
Port Numbers ___________________________________________________ 11

3. Getting Started 12

Physically Connecting the Unit _________________________________________ 12
Required Information ________________________________________________ 12

Hardware Address _______________________________________________ 12
IP Address _____________________________________________________ 13

4. Using DeviceInstaller 14

Installing DeviceInstaller ______________________________________________ 14
Assigning an IP Address _____________________________________________ 14
Accessing the Micro125 Using DeviceInstaller ____________________________ 15
Viewing the Current Configuration ______________________________________ 15

5. C

onfiguration Using Web Manager 18

Accessing Web-Manager Using DeviceInstaller ___________________________ 18
Network Configuration _______________________________________________ 20

Network Mode __________________________________________________ 20
Automatic IP Address Configuration _________________________________ 20
Static IP Address Configuration _____________________________________ 21
Ethernet Configuration ____________________________________________ 22

Server Configuration _________________________________________________ 23

Server Configuration _____________________________________________ 23
Advanced ______________________________________________________ 24

Micro125 User Guide 3

Host List Configuration _______________________________________________ 24

Retry Settings ___________________________________________________ 25
Host Information _________________________________________________ 25

Channel 1 and Channel 2 Configuration _________________________________ 25

Serial Settings __________________________________________________ 26
Connection Settings - TCP ________________________________________ 29

Connection Settings - UDP ________________________________________ 32
Apply Settings ______________________________________________________ 33
Apply Defaults _____________________________________________________ 34

6. Configuration via Telnet or Serial Port (Setup Mode) 35

Accessing Setup Mode _______________________________________________ 35

Telnet Connection _______________________________________________ 35

Serial Port Connection ____________________________________________ 36
Exiting Setup Mode _________________________________________________ 37

7. Setup Mode: Server Configuration 38

Server Configuration (Option 0) ________________________________________ 38
IP Address ________________________________________________________ 38
Set Gateway IP Address _____________________________________________ 39
Netmask: Number of Bits for Host Part __________________________________ 39
Set DNS Server IP Address ___________________________________________ 39
Change Telnet/Web-Manager Password _________________________________ 40
DHCP Name _______________________________________________________ 40

8. Setup Mode: Channel Configuration 41

Channels__________________________________________________________ 41
Baudrate __________________________________________________________ 41
I/F (Interface) Mode _________________________________________________ 42
I/F Mode __________________________________________________________ 42
Flow _____________________________________________________________ 43
Port Number _______________________________________________________ 43
Connect Mode _____________________________________________________ 44

a) Incoming Connection ___________________________________________ 45

b) Response ____________________________________________________ 45

c) Active Startup _________________________________________________ 45

d) Datagram Type _______________________________________________ 48

e) Modem Mode _________________________________________________ 48
Send the Escape Sequence (+++) in Modem Mode ________________________ 50
Show IP addr after 'RING' ____________________________________________ 51
Auto Increment Source Port ___________________________________________ 51
Remote IP Address _________________________________________________ 51
Remote Port _______________________________________________________ 51
DisConnMode ______________________________________________________ 51
Flush Mode (Buffer Flushing) __________________________________________ 53
Pack Control _______________________________________________________ 53

Packing Interval _________________________________________________ 54

Trailing Characters _______________________________________________ 54

Micro125 User Guide 4

Send Characters ________________________________________________ 54
DisConnTime (Inactivity Timeout) ______________________________________ 54
Send Characters ____________________________________________________ 55
Telnet Terminal Type ________________________________________________ 55
Channel (Port) Password _____________________________________________ 55

9. Setup Mode: Advanced Settings 56

Expert Settings (Option 5) ____________________________________________ 56

TCP Keepalive Time in Seconds ____________________________________ 56

ARP Cache Timeout in Seconds ____________________________________ 57

Disable Monitor Mode at Bootup ____________________________________ 57

HTTP Port Number ______________________________________________ 57

MTU Size ______________________________________________________ 57

TCP Re-transmission Timeout ______________________________________ 57

Enable Alternate MAC ____________________________________________ 57

Ethernet Connection Type _________________________________________ 57
Security Settings (Option 6) ___________________________________________ 58

Disable SNMP __________________________________________________ 58

SNMP Community Name __________________________________________ 58

Disable Telnet Setup _____________________________________________ 58

Disable TFTP Firmware Upgrade ___________________________________ 59

Disable Port 77FE (Hex) __________________________________________ 59

Disable Web Server ______________________________________________ 59

Disable Web Setup ______________________________________________ 59

Disable ECHO Ports _____________________________________________ 59

Enable Encryption _______________________________________________ 59

Enable Enhanced Password _______________________________________ 60
Default Settings (Option 7) ____________________________________________ 61

Channel 1 and Channel 2 Configuration Defaults _______________________ 61

Expert Settings Defaults __________________________________________ 61

Security Settings Defaults _________________________________________ 62

10. Firmware Upgrades 63

Obtaining Firmware _________________________________________________ 63
Reloading Firmware _________________________________________________ 63

Using TFTP: Graphical User Interface ________________________________ 63

Using TFTP: Command Line Interface _______________________________ 64

Recovering the Firmware Using the Serial Port and DeviceInstaller _________ 65

11. Monitor Mode 66

Entering Monitor Mode Using the Seria l Po rt ______________________________ 66
Entering Monitor Mode Using the Network Port ____________________________ 66

Monitor Mode Commands _________________________________________ 66

12. Troubleshooting 69

Problems and Error Messages _________________________________________ 69
Technical Support ___________________________________________________ 72

Micro125 User Guide 5

A: Binary to Hexadecimal Conversions 73

Converting Binary to Hexadecimal ______________________________________ 73

Conversion Table ________________________________________________ 73

Scientific Calculator ______________________________________________ 74

List of Figures

Figure 3-1. Evaluation Board Connected to Serial Device and Network ____________ 12
Figure 5-1. Web-Manager Login Window ____________________________________ 19
Figure 5-2. Lantronix Web-Manager ________________________________________ 19
Figure 5-3. Network Settings _____________________________________________ 20
Figure 5-4. Server Settings _______________________________________________ 23
Figure 5-5. Hostlist Settings ______________________________________________ 25
Figure 5-6. Channel Serial Settings ________________________________________ 26
Figure 5-7. TCP Connection Settings _______________________________________ 29
Figure 5-8. UDP Connection Settings _______________________________________ 32
Figure 5-9. Applying Settings _____________________________________________ 34
Figure 5-10. Applying Default Settin gs ______________________________________ 34
Figure 6-1. MAC Address ________________________________________________ 36
Figure 6-2. Setup Menu Options ___________________________________________ 36
Figure 8-1. Serial Port Param eter s _________________________________________ 41
Figure 8-2. Hostlist Option _______________________________________________ 47
Figure 9-1. Expert Settings _______________________________________________ 56
Figure 9-2. Security Settings ______________________________________________ 58
Figure 10-1. TFTP Window _______________________________________________ 64

List of Tables

Table 7-1. BootP/DHCP/Au toIP options _____________________________________ 38
Table 7-2. Standard IP Network Netmasks __________________________________ 39
Table 8-1. Interface Mode Optio ns _________________________________________ 42
Table 8-2. Common Interface Mode Settings _________________________________ 42
Table 8-3. Interface Mode Options _________________________________________ 43
Table 8-4. Flow Control Options ___________________________________________ 43
Table 8-5. Reserved Port Numbers ________________________________________ 43
Table 8-6. Connect Mode Optio ns _________________________________________ 44
Table 8-7. Manual Connection Address Example _____________________________ 46
Table 8-8. Modem Modes ________________________________________________ 48
Table 8-9. Modem Mode Messages ________________________________________ 49
Table 8-10. Modem Mode Commands ______________________________________ 50
Table 8-11. Disconnect Mode Options ______________________________________ 52
Table 8-12. Flush Mode Options ___________________________________________ 53
Table 8-13. Pack Control Options __________________________________________ 53
Table 9-1. Expert Settings: Det a ils Sett ings __________________________________ 56
Table 10-1. Firmware Files _______________________________________________ 63
Table 11-1. Monitor Mode Commands ______________________________________ 67
Table 11-2. Command Response Codes ____________________________________ 68

Micro125 User Guide 6

2: Introduction

Describes the main features of the Micro125 and the protocols it
supports.

3: Getting Started

Provides information for physically connecting your unit.

4: Using DeviceInstaller

Provides information for getting your unit up and running, using
DeviceInstaller to assign an IP address.

5: Configuration Using Web

Details using the Web-Manager to set parameters such as port
terminal or terminal emulation progra m through the serial port.

Configuration

8: Setup Mode: Channel
Configuration

Details the serial port settings.

9: Setup Mode: Advanced
Settings

the unit to factory default values.

10: Firmware Upgrades

Provides instructions for obtaining the latest firmware and
updating the Micro125.

11: Monitor Mode

interface for monitoring the network and diagnosing problems.

12: Troubleshooting

Describes common problems and error messages and how to
contact Lantronix Technical Support.

A: Binary to Hexadecimal
Conversions

hexadecimals.

1. Using This Guide

Purpose and Audience

This guide covers the DeviceLinx Micro125 embedded device server. It provides the
information needed to configure, use, and update the Micro125 firmware and is intended for
OEMs and system integrators who are embedding Micro125 in th eir end product designs.

Chapter Summary

The remaining chapters in this guide include:

Chapter Description

Manager

6: Configuration via Telnet or
Serial Port (Setup Mode)

7: Setup Mode: Server

and server properties.

Provides instructions for accessing Setup Mode (command line
interface) using a Telnet connection through the network or a

Details the network (server) settings

Details expert, and security settings and explains how to reset

Provides instructions for accessing and using the command line

Provides instructions for conve rt ing binary numb ers to

Micro125 User Guide 7

Additional Docume ntation

Micro125 Integration Guide

Provides information about the Micro125 hardware, testing
Micro125 into your product.

Com Port Redirector User Guide

Provides information on using the Window s-ba sed uti lity to
create a virtual com port.

DeviceInstaller Online Help

Provides information on using DeviceInstaller to configure IP
addresses and locate Lantronix devices on the network.

Visit the Lantronix Web site at www.lantronix.com/support/documentation for the latest
documentation and the following additional documentation.

Document Description

1: Using This Guide

the Micro125 using the evaluation boar d, and integr at ing the

Micro125 User Guide 8

2. Introduction

This chapter summarizes the Micro125 device server’s features and the basic information
needed to get started.

Capabilities

The Micro125 device server has the following capabilities:

 Connects devices through a TCP data channel or through a Telnet connection to

computers or to another device server. The Micro125 also supports UDP datagrams.

 Contains a web [HTTP] server allowing presentation of custom content and easy

configuration through a browser.

Applications

The Micro125 device server connects serial devices such as those listed below to Ethernet
networks using the IP protocol family.

 ATM machines
 CNC controllers
 Data collection devices
 Environmental sensors
 Universal Power Supply (UPS) management units
 Telecommunications equipment
 Data display devices
 Security alarms and access control devices
 Handheld instruments
 Modems
 Time/attendance clocks and terminals

Micro125 User Guide 9

Protocol Support

The Micro125 device server uses the Internet Protocol (IP) for network communications. It
uses the Transmission Control Protocol (TCP) to assure that no data is lost or duplicated,
and that everything sent to the connection arrives correctly at the target.

Supported protocols include:

 ARP, UDP, TCP, ICMP, Telnet, TFTP, AutoIP, DHCP, HTTP, and SNMP for network

communications and management.

 TCP, UDP, and Telnet for connections to the serial port.
 TFTP for firmware and web page updates.
 IP for addressing, routing, and data block handling over the network.
 User Datagram Protocol (UDP) for typical datagram applications in which devices interact

with other devices without m aintaining a poin t-to-point connection.

Configuration Me thods

2: Introduction

For the unit to operate correctly on a network, it must have a unique IP address on the
network. There are three basic methods for logging into the device server to assign an IP
address and configure the unit:

DeviceInstaller: Assign an IP address and view the current Micro125 configuration using a
Graphical User Interface (GUI) on a PC attached to a network. (See Using DeviceInstaller.)

Web-Manager: Through a web interface, configure the Micro125 and its settings using the
Micro125’s Web-Manager. (See Configuration Using Web Manager

Serial & Telnet Ports: There are two approaches to accessing Serial Mode. Make a Telnet
connection to the network port (9999) or connect a terminal (or a PC running a terminal
emulation program) to the unit’s serial port. (See Configuration via Telnet or Serial Port

(Setup Mode).)

Addresses and Port Numbers

Hardware Address

The hardware address is also referred to as the Ethernet address or the MAC address. The
first three bytes of the Ethernet address are fixed and read 00-20-4A, identifying the unit as a
Lantronix product. The fourth, fifth, and sixth bytes are unique numbers assigned to each
unit.

Example: 00-20-4A-14-01-18

Note: Make note of the MAC address. It is needed to locate the Micro125 using

DeviceInstaller.

Micro125 User Guide 10

2: Introduction

IP Address

Every device connected to an IP network must have a unique IP address. This address is
used to reference the specific unit. The Micro125 is autom atically assigned an IP address on
DHCP-enabled networks, as it is DHCP-enabled by default.

Port Numbers

Every TCP connection and every UDP datagram is defined by a destination IP address and a
port number. For example, a Telnet application commonly uses port number 23. A port
number is similar to an extension on a phone system.

The unit's serial channel (port) can be associated with a specific TCP/UDP port number. Port
number 9999 is reserved for access to the unit's Setup (configuration) Mode wi ndo w. Ports 0­1024 are reserved as well. For more information on reserved port numbers, see Table 8-5.

Reserved Port Numbers.

Micro125 User Guide 11

RS232

10/100 Ethernet

+5

CON2

J1

3. Getting Start ed

This chapter covers the steps required to get an embedded device physically connected.

Physically Connecting the Unit

The following diagram shows a properly installed Micro125. Other devices connect in a
similar manner.

Figure 3-1. Evaluation Board Connected to Serial Device and Network

1. Connect a computer or serial device to your unit.

2. Connect an Ethernet cable to the RJ-45 Eth ernet por t.

3. Supply power to your unit using the power supply that was included in the packaging.

Note: The required input voltage for the Micro125 is 5VDC (+/-5% at ~200 mA). Other

devices may require a different voltage.

4. Supply power to the serial device.

Required Information

Hardware Address

You need to know the unit’s hardware address (also known as the MAC address), which is on
the product label. It is in the format: 00-20-4a-XX-XX-XX, where the XXs are unique numbers
assigned to the product.

Micro125 User Guide 12

Hardware Address: 00-20-4a-_____-_____-_____

3: Getting Started

IP Address

Your device server must have a unique IP address on your network. The systems
administrator generally provides the IP address and corresponding subnet mask and
gateway. The IP address must be within a valid range, unique to your network, and in the
same subnet as your PC.

IP Address: _______ _______ _______ _______
Subnet Mask: _______ _______ _______ _______
Gateway: _______ _______ _______ _______
You have several options for assigning an IP address to your unit. We recommend that you

manually assign the IP address over the network using DeviceInstaller software, which is
described in Using DeviceInstaller.

Micro125 User Guide 13

4. Using DeviceInstaller

This chapter covers the steps for getting the Micro125 device server online and viewing its
current configuration.

Note: DeviceInstaller is a free utility program provided by Lantronix that

discovers, configures, upgrades, and manages Lantronix Device Servers. It
can be downloaded from the Lantronix website at

www.lantronix.com/support/downloads.

For instructions on using DeviceInstaller to configure the IP address and
related settings or for more advanced features, see the

Online Help.

Installing DeviceInstaller

To install DeviceInstaller:

DeviceInstaller

1. Download the latest version of DeviceInstaller from

2. Run the executable to start the installation process.

3. Respond to the installation wizard prompts. (If prompted to select an installation type,
select Typical).

Assigning an IP Address

The unit’s IP address must be configured before it can work correctly on a network. You have
several options for assigning an IP to your unit. We recommend that you manually assign the
IP address over the network using DeviceInstaller.

Note: To use a serial connection instead of an Ethernet connection to configure the device,

see Chapter 6: Configuration via Telnet or Serial Port (Setup Mode).

The unit’s IP address is normally set to 0.0.0.0 at the factory. The hardware address is on the
product label. The unit is DHCP enabled as the default.

To assign an IP address manually:

1. Click StartAll Programs  LantronixDeviceInstaller 4.3DeviceInstaller. If your
PC has more than one network adapter, a message displays. Select an adapter and click
OK.

Note: If the unit already has an IP address (e.g., DHCP has assigned an IP address), click

the Search icon and select the unit from the list of Lantronix device servers on the local
network.

http://www.lantronix.com/downloads.

2. Click the Assign IP icon

3. If prompted, enter the hardware address (on the product label) and click Next.

Micro125 User Guide 14

.

4: Using DeviceInstaller

Name

Configurable field. A name that identif ies the Micro125.
name is not visible on other PCs or laptops using DeviceInstaller.

DHCP Device Name

Non-configurable field. Displays the name associated with Micro125’s

or Configuration via Telnet or Serial Port (Setup Mode).

Group

group name is not visible on other PCs or laptops using DeviceInstaller.

4. Select Assign a specific IP address and click Next.

5. Enter the IP address. The Subnet mask displays automatically based on the IP address;
if desired, you may change it. On a local network, you can leave the Default gateway
blank (all zeros). Click Next.

6. Click the Assign button and wait several seconds until a confirmation message displays.
Click Finish.

7. Select the device from the main window list and select Ping from the Tools menu. T

ing Device dialog box shows the IP address of the selected unit.

P

8. From the Tools menu, click the Ping button. The results display in the Status window.
Click the Clear Status button to clear the window so you can ping the device again.

Note: If you do not receive “Reply” messages, make sure the unit is properly attached to the

network and that the IP address assigned is valid for the particular network segment you are
working with. If you are not sure, check with your systems administrator.

9. Click the Close button to close the dialog box and return to the main window.

Accessing the Micro125 Using DeviceInstaller

1. Click StartPrograms  LantronixDeviceInstallerDeviceInstaller.

2. Click the Micro folder. The list of available Lantronix Micro-type devices displays.

3. Expand the list of Micro125 devices by clicking the + symbol next to the Micro125 icon.
Select the Micro125 unit by clicking on its IP address to view its configuration.

Viewing the Current Configuration

DeviceInstaller provides a view of the unit's configuration.

he

To view the unit's current settings:

1. Follow the instructions above to locate the Micro125.

2. In the right pane, click the Device Details tab. The current Micro125 configuration
di

splays:

Device Details
Settings

Micro125 User Guide 15

Description

Double-click the field, type in the value, and press Enter to complete. This

current IP address, if the IP address was obtained dynamically.
To change the DHCP device name, see sections, Configuration Using

Web Manager

Configurable field. A group name to categorize the Micro125.
Double-click the field, type in the value, and press Enter to complete. This

4: Using DeviceInstaller

Comments

Configurable field. Information about the Micro125.

DeviceInstaller.

Device Family

Non-configurable field. Displays the Micro125’s dev ice family as Micro125.

Type

Non-configurable field. Displays the device type as Micro125.

ID

box.

Hardware Address

Non-configurable field. Displays the Micro125’s hardware (or MAC)
address.

Firmware Version

Micro.

Extended Firmware
Version

Non-configurable field. Displays the full version nomenclature of the
firmware.

Online Status

is currently performing a task).

IP Address
change the IP address, click Assign IP on the DeviceInstaller menu bar.

IP Address was

Displays “Dynamically” if the device automatically received an IP address

Obtain via Auto IP with value of True or False

Subnet Mask

Non-configurable field. Displays the Micro125’s curren t subn et mask.

Gateway

Non-configurable field. Displays the Micro125’s curren t gatew ay .

Number of COB
partitions supported

Non-configurable field. Displays the number of COB partitions supported.

Number of Serial
Ports

Non-configurable field. Displays the number of ports on the Micro125.

TCP Keepalive

Non-configurable field. Displays 1-65s, the Micro125’s TCP keepalive
value. The default setting is 45.

Telnet Supported

Non-configurable field. Indicates whether Telnet is enabled on this
Micro125.

Telnet Port

Non-configurable field. Displays the Micro125’s port for Telnet sessions.

Web Port

Non-configurable field. Displays the Micro125’s port for Web-Manager
configuration.

Maximum Baud Rate
Supported

Note: the Micro125 may not currently be running at this rate.

Device Details
Settings

Description

Double-click the field, type in the value, and press Enter to complete. This
description or comment is not visible on other PCs or laptops using

Non-configurable field. Displays the Micro125’s ID embedded within the

Non-configurable field. Displays the firmware currently installed on the

Non-configurable field. Displays the Micro125’s status as online, offline,
unreachable (the Micro125 is on a different subnet), or busy (the Micro125

Non-configurable field. Displays the Micro125’s current IP address. To

Obtained

(e.g., from DHCP). Displays “Statically” if the IP address was configured
manually. If the IP address was assigned dynamically, the following fields
appear:

 Obtain via DHCP with value of True or False.
 Obtain via BOOTP with value of True or False.
 Obtain via RARP with value of True or False


Non-configurable field. Displays the Micro125’s maximum baud rate.

Micro125 User Guide 16

4: Using DeviceInstaller

Firmware
Upgradeable

Non-configurable field. Displays True, indicating the Micro125’s firmware is
upgradeable as newer versions become available.

Supports
Configurable Pins

available on the Micro125.

Supports Email
Triggers

Non-configurable field. Displays False, indicating email triggers are not
available on the Micro125.

Supports AES Data
Stream

encryption.

Supports 485

Non-configurable field. Displays True, indicating the Micro125 supports the
RS-485 protocol.

Supports 921K Baud
Rate

rates up to 921 Kbps.

Supports HTTP
Server

Non-configurable field. Displays True.

Supports HTTP
Setup

Supports 230K Baud
Rate

Non-configurable field. Displays True.

Supports GPIO

support communication via General Purpose Input Output (GPIO).

Device Details
Settings

Description

Non-configurable field. Displays False, indicating configurable pins are not

Non-configurable field. Displays True if the Micro125 unit supports AES

Non-configurable field. Displays False. Micro125 does not support baud

Non-configurable field. Displays True.

Non-configurable field. Displays False, indicating the Micro125 does not

Micro125 User Guide 17

5. Configuration Using Web Manager

You must configure the unit so that it can communicate on a network with your serial device.
For example, you must set the way the unit will respond to serial and network traffic, how it
will handle serial packets, and when to start or close a connection.

The unit’s configuration is stored in nonvolatile memory and is retained without power. You
can change the configuration at any time. The unit performs a reset after you change and
store the configuration.

In this chapter, we describe how to configure the Micro125 using Web-Manager, Lantronix’s
browser-based configuration tool. (For information on using Setup Mode, our command line
configuration interface, see Chapter 6: Configuration via Telnet or Serial Port (Setup Mode).

Note: The examples in this section show a typical device. Your device may have different

configuration options.

Accessing Web-Manager Using DeviceInstaller

Note: For more information on DeviceInstaller, see Chapter 4: Using DeviceInstaller.

1. Run DeviceInstaller and search for the list of available Lantronix device servers.

2. Click on the Micro folder. The list of available Micro type devices displays.

3. Expand the list of Micro125 devices by clicking the + symbol next to the Micro125 icon.

4. Select the Micro125 unit by clicking its hardware address.

5. In the right pane, click the Web Configuration tab.

6. To view the Micro125’s Web-Manager in the current DeviceInstaller window, click the Go
button. To open the Web-Manager in a web browser, click the External Browser button.

Note: Alternatively, to open Web-Manager, open your web browser and enter the IP address

of the Micro125.

A dialog box appears to prompt for a User name and Password.

Micro125 User Guide 18

erform one of the following:

7. P

 If no Telnet/Web Manager password has been defined (default), leave both fields

blank and click OK.

5: Configuration Using Web Manager

Figure 5-1. Web-Manager Login Window

 If a Telnet/Web Manager password has been defined, leave the usernam e blank,

type in the password, and then click OK.

The Web-Manager displays.

Figure 5-2. Lantronix Web-Manager

he main menu is in the left pane of the Web-Manager window.

T

Micro125 User Guide 19

Network Configuration

The unit’s network values display when you select Network from the main menu. The
following sections describe the conf ig urab le par ameters on the Network Settings page.

5: Configuration Using Web Manager

Figure 5-3. Network Settings

Network Mode

1. Click Network from the main menu.

2. Select Wired Only. It is the only choice for Network Mode as it enables the Ethernet
network connectivity.

Automatic IP Address Configuration

An IP address can be assig ned automatically. You then enter related network settings.
To assign an IP address automatically:

1. On the main menu, click Network.

2. Select Obtain IP address automatically.

Micro125 User Guide 20

5: Configuration Using Web Manager

BOOTP

Select Enable to permit the Bootstrap Protocol (BOOTP). server to assign
default.

DHCP

Select Enable to permit the Dynamic Host Configuration Protocol (DHCP) to
default.

AutoIP

Select Enable to permit the Micro125 to generate an IP in the 169.254.x.x
address range with a Class B subnet. Enable is the default.

DHCP Host Name

Enter the desired host name for the Micro125.

IP Address

If DHCP is not used to assign IP addresses, enter it manually in decimal­dot notation. The IP address must be set to a unique value in the network.

Subnet Mask

are assigned for the host part.

Default Gateway

The gateway address, or router, allows communication to other LAN

must be within the local network.

DNS Server

Note: This setting is applicable only in Manual Connection mode.

3. Enter the following (as necessary):

Dynamic IP Setting Description

the IP address from a pool of addresses automatically. Enable is the

assign a leased IP address to the Micro125 unit automatically. Enable is the

Note: Disabling BOOTP, DHCP, and AutoIP (all three checkboxes) is not advised as the only

available IP assignment method will then be ARP or serial port.

4. When you are finished, click the OK button.

5. On the main menu, click Apply Settings.

Static IP Address Configuration

You manually assign an IP address to the unit and enter related network settings.

To assign an IP address manually:

1. On the main menu, click Network.

2. Select Use the following IP configuration.

3. Enter the following (as necessary):

Static IP Settings Description

A subnet mask defines the number of bits taken from the IP address that

segments. The gateway address should be the IP address of the router
connected to the same LAN segment as the unit. The gateway address

The DNS server allows the name of a remote machine to be resolved
automatically. Enter the IP address of the DNS server. If the device is
DHCP enabled, the DHCP server provides the DNS server IP address,
which will override this configured value.

4. When you are finished, click the OK button.

5. On the main menu, click Apply Settings.

Micro125 User Guide 21

5: Configuration Using Web Manager

Auto Negotiate

 Duplex: The direction of data transmis si on. The default is Full.

Ethernet Configuration

You must specify the speed and direction of data transmission.

To specify how data will be transmitted:

1. On the main menu, click Network.

2. Enter the following (as necessary):

Ethernet Settings Description

With this option, the Ethernet port auto-negotiates the speed and duplex
with the hardware endpoint to which it is connected. This is the default.

If this o ption is no t selected , the complete the fields that become
available:

 Speed: The speed of data transmission. The default is 100

Mbps.

3. When you are finished, click the OK button.

4. On the main menu, click Apply Settings.

Micro125 User Guide 22

Server Configuration

Enhanced Password

Select whether to enable enhanced password:

length.

Telnet/Web Manager
Password

Enter the password required for Telnet configuration and Web
Manager access.

Retype Password

Re-enter the password required for Telnet confi gurat ion and Web
Manager access.

The unit’s server values display when you select Server from the main menu. The following
sections describe the configurable parameters on the Server Settings page.

5: Configuration Using Web Manager

Figure 5-4. Server Settings

To configure the Micro125’s device server settings:

1. On the main menu, click Server.

2. Configure or modify the following fields:

Server Configuration

Server Configuration
Settings

Micro125 User Guide 23

Description

 Enable: selecting this option enables advanced password

creation, allowing you to create passwords up to 16 bytes in length.

 Disable: selecting this option disables advanced password

creation, allowing you to create basic passwords up to 4 bytes in

Advanced

ARP Cache Timeout

When the unit communicates with another device on the network, it
number of seconds (1-600) before it refreshes this table.

TCP Keepalive (secs)

0 and 60 seconds. 0 disables keep alive. The defa ult setting is 45.

Monitor Mode @ Bootup

Select Disable to disable entry into the monitor mode using the 'yyy'

are received during the device server's init ial iz ation at start up .

HTTP Server Port

This option allows the configuration of the web server port number.
The valid range is 1-65535. The default port is 80.

Config Server Port

Not applicable for this product.

MTU Size
512 and 1400 bytes. The default is 1400 bytes.

TCP Re-transmission

The desired TCP re-transmission timeout value. If the ACK is not
will retransmit the data. The valid range is 500-4000 msec.

Advanced Settings Description

5: Configuration Using Web Manager

(secs)

timeout (ms)

adds an entry into its ARP table. ARP Cache timeout defines the

TCP Keepalive time defines how many seconds the unit waits during
an inactive connection before checking its status. If the unit does not
receive a response, it drops that connection. Enter a value between

or 'xx1' key sequence at startup. This field pr ev ents the unit fr om
entering monitor mode by interpreting the stream of characters that

The Maximum Transmission Unit (MTU) is the largest physical
packet size a network can transmit for TCP and UDP. Enter between

received for a packet sent from the Micro125 device, then the unit

3. When you are finished, click the OK button.

4. On the main menu, click Apply Settings.

Host List Configuration

The Micro125 scrolls through the host list until it connects to a device listed in the host list
table. After a successful connection, the unit stops trying to connect to any others. If this
connection fails, the unit continues to scroll through the table until the next successful
connection.

The host list supports a minimum of 1 and a maximum of 12 entries. Each entry contains an
IP address and a port number.

Note: The host list is disabled for Manual and Modem Mode. The unit does not accept a data

connection from a remote device when the hostlist option is enabled.

To configure the Micro125’s host list:

1. On the main menu, click Hostlist.

Micro125 User Guide 24

5: Configuration Using Web Manager

Retry Counter

retry connecting to the host list.

Retry Timeout

Enter the duration (in milliseconds) the Micro125 should abandon
attempting a connection to the host list.

Host Address

Enter or modify the host’s IP address.

Port

Enter the target port number.

Figure 5-5. Hostlist Settings

2. Enter or modify the following fields:

Retry Settings

Retry Settings Description

Enter the value for the number of times the Micro125 should attempt to

Host Information

Host Information
Settings

3. When you are finished, click the OK button.

4. On the main menu, click Apply Settings.

Description

Channel 1 and Channel 2 Configuration

The Channel 1 and Channel 2 configuration defines how the serial port responds to network
and serial communication.

Micro125 User Guide 25

Serial Settings

Disable Serial Port

Available on Channel 1 settings only. When selected, disables

baud rate of 00 in channel settings to disable the serial port.

Protocol

selected channel.

To configure the channel’s serial settings:

5: Configuration Using Web Manager

1. On the main menu, click Serial Settings (under Channel 1 or Channel 2) to display th

erial Settings window.

S

Figure 5-6. Channel Serial Settings

e

2. In the available fields, enter the following information:

Channel 1 or Channel 2

Channel Setting Description

Port Settings

Port Settings Description

Micro125 User Guide 26

communication through the serial port.

Note: Using a telnet session (see Baudrate) you may enter a

From the drop-down menu, select the protocol type for the

Port Settings Description

Flow Control

Flow control manages data flow between devices in a network to

None is the default.

Baud Rate

The unit and attached serial device, such as a modem, must agree

38400, 57600, 115200 or 230400.

Data Bits

Indicates the number of bits in a transmitted data package. The
default is 8.

Parity

Checks for the parity bit. The default is None.

Stop Bits

The stop bit follows the data & parity bits in serial communic ation .
It indicates the end of transmission. The default is 1.

Enable Packing

Idle Gap Time

Select the maximum time for inactivity. The default time is

12 milliseconds.

Match 2 Byte Sequence
collection to the Micro125. The default is No.

Match Bytes

Use to indicate the end of a series of data to be sent as one group.
Set this value to 00 if specific functions are not needed.

Send Frame Immediate

After the detection of the byte sequence, indicates whether to send
data frame. The default setting is No.

Send Trailing Bytes
characters. The default is None.

Pack Control

Pack Control Settings Description

5: Configuration Using Web Manager

ensure it is processed efficiently. Too much data arriving before a
device is prepared to manage it causes lost or retransmitted data.

on a speed or baud rate to use for the serial connection. Valid
baud rates are 300, 600, 1200, 2400, 4800, 9600 (default), 19200,

Select to enable packing on the Micro125.
Two firmware-selectable packing algorithms define how and when

packets are sent to the network.
The standard algorithm is optimized for applications in which the

unit is used in a local environment, allowing for very small delays
for single characters, while keeping the packet count low.

The alternate packing algorithm minimizes the packet count on the
network and is especially useful in applications in a routed Wide
Area Network (WAN). Adjusting parameters in this mode can
economiz the network data stream.

Disabled by default.

Use to indicate the end of a series of data to be sent as one group.
The sequence must occur sequentially to indic ate end of the dat a

the data frame or the entire buffer. Select Yes to send only the

Select the number of bytes to send after the end-of-sequence

Micro125 User Guide 27

Flush Input Buffer (Serial to Network)

With Active Connect

Select Yes to clear the input buffer with a connection that is
initiated from the device to the network. The default is No.

With Passive Connect

Select Yes to clear the input buffer with a connection initiated from
the network to the device. The default is No.

At Time of Disconnect

Select Yes to clear the input buffer when the network connection
to or from the device is disconnected. The default is No.

With Active Connect

Select Yes to clear the output buffer with a connection that is
initiated from the device to the network. The default is No.

With Passive Connect

Select Yes to clear the output buffer with a connection initiated
from the network to the device. The default is No.

At Time of Disconnect

Select Yes to clear th e output buffer when the network connection
to or from the device is disconnect ed. The default is No.

Flush Input Buffer Settings Description

Flush Output Buffer (Network to Serial)

5: Configuration Using Web Manager

Flush Output Buffer
Settings

Description

3. When you are finished, click the OK button.

4. On the main menu, click Apply Settings.

Micro125 User Guide 28

5: Configuration Using Web Manager

Connection Settings - TCP

To configure a channel’s TCP settings:

1. On the main menu, click Connection. The Connection Settings window for the channel
displays.

Figure 5-7. TCP Connection Settings

Micro125 User Guide 29

5: Configuration Using Web Manager

Protocol

From the drop-down menu, select TCP.

Accept Incoming

Select Yes to accept incoming connections. The default is Yes.

Password Required

Determines whether a password is required for an incoming
set for Telnet mode.

Password

If Password Required was set to Yes, enter the password for
passive connections.

Active Connect

Select None to disable Active Connect. Otherwise, indicate the

address and port after booting up.

Start Character

If Active Connect is set to With Start Character, enter the start
character in this field.

Modem Mode

Indicates the on-screen response type when in Modem Mode (if

Modem Mode is enabled).

Show IP Address After Ring

Indicates whether to display the remote IP addres s upon
connection. The default setting is Yes.

2. In the available fields, enter or modify the following information:

Connect Protocol

Connect Protocol Setting Description

Connect Mode: Passive Connection

Passive Connection Mode
Settings

Description

passive connection. This field is not available when a password is

Connect Mode: Active Connection

Active Connection Mode
Settings

Description

connection type from the drop-down list:

 With Any Character: Attempts to connect when any

character is received from the serial port.

 With Active Mdm Ctrl In: Accepts external connection

requests only when the Modem Control In input is
asserted.

Micro125 User Guide 30

 With Start Character: Attempts to connect when it

receives a specific start character from the serial port. The
default start character is carriage return.

 Manual Connection: Attempts to connect when directed

by a command string received from the serial port.

 Auto Start: Automatically connects to the remote IP

Endpoint Configuration

Local Port

Enter the local port number.

Auto increment for active

Select to auto-increment the local port number for new outgoing

maximum range is reached.

Remote Port

Enter the remote port number.

Remote Host

Enter the IP address of the remote device.

Telnet Com Port Cntrl

This field is available for configuration only when Active Connect

CPR Online Help for details.)

Terminal Name

This field is available for configuration only when Telnet Mode is

applications such as terminal emulation to IBM hosts.

Connect Response

A single character is transmitted to the serial port when there is a
change in connection state. Default setting is None.

Use Hostlist

If this option is set to True, the device server scrolls through the

when the host list option is enabled .

LED

Select Blink for the status LEDs to blink upon connection or
None for no LED output.

On Mdm_Ctrl_In Drop

Set to Yes for the network connection to or from the serial port to
asserted state to not asserted state. The default setting is No.

Hard Disconnect

When set to Yes, the TCP connection closes even if the remote
site does not acknowledge the disconnect request.

5: Configuration Using Web Manager

Endpoint Configuration
Settings

connect

Common Options

Common Option Settings Description

Description

connections. The range of auto-incremented port numbers is
50,000 to 59,999 and loops back to the beginning when the

is set to None. Select Enable to permit Telnet communication to
the unit. The Telnet Com Port Cntrl feature is used in
conjunction with the Com Port Redirector (CPR) utility. (See the

set to Enable.
Use the terminal name for the Telnet terminal type. Enter only

one name. When this option is enabled, the unit also reacts to the
end of record (EOR) and binary options, which can be used for

Disconnect Mode

Disconnect Mode Settings Description

Micro125 User Guide 31

host list until it connects to a device listed in the host list table.
Once it connects, the unit stops trying to connect to any others. If
this connection fails, the unit continues to scroll through the table
until it connects to another IP in the host list.

The host list is disabled for Manual Mode and for Modem Mode.
The unit will not accept a data connection from a remote device

disconnect (drop) when Modem Control In transitions from an

Disconnect Mode Settings Description

Check EOT (Ctrl-D)

Select Yes to drop the connection when Ctrl-D or Hex 04 is

network. The default setting is No.

Inactivity Timeout

Use this parameter to set an inactivity timeout. The unit drops the

Port 2. However, port numbers may be set to a different value.

detected. Both Telnet Com Port Cntrl and Check EOT
(Ctrl+ D) must be enabled for Disconnect with EOT to function

properly. Ctrl+D is only detected going from the serial port to the

TCP connection to port 10001/10002* if there is no activity on the
serial line before the set time expires. Enter time in the format
mm:ss, where m is the number of minutes and s is the number of
seconds. To disable the inactivity timeout, enter 00:00.

Note*: The default port number for Port 1 is 10001 and 10002 for

3. When you are finished, click the OK button.

4. On the main menu, click Apply Settings.

Connection Settings - UDP

To configure a channel’s UDP settings:

5: Configuration Using Web Manager

1. On the main menu, click Connection. The Connection Settings window for the selecte

hannel displays.

c

2. In the available fields, enter or modify the following information:

Figure 5-8. UDP Connection Settings

d

Micro125 User Guide 32

Connect Protocol

Protocol

Select UDP from the drop-down menu.

Datagram Type

Configures the remote IP or network broadcast address and the
setting is 00.

Accept Incoming

Select Yes to accept incoming UDP datagrams.

Local Port

Enter the local port number.

Remote Port

Enter the port number of the remote device.

Remote Host

Enter the IP address of the remote device.

Note: Datagrams are sent as subnet-directed broadcasts.

Device Address Table

The table is enabled when Datagram Type is set to FD. Enter values

Type FD is for OEM use.

Connection Protocol Description

Datagram Mode

5: Configuration Using Web Manager

Datagram Mode
Settings

Endpoint Configuration

Endpoint Configuration
Settings

Use Broadcast

Description

remote port. Enter 01 for directed or broadcast UDP. The default

Description

Select to broadcast the UDP datagram. The default is not to
broadcast.

between 1 and 255 to identify units on the local network of device
servers.

Note: Lantronix Tech Support supports Datagram type 01. Datagram

3. When you are finished, click the OK button.

4. On the main menu, click Apply Settings.

Apply Settings

1. To save and apply the configuration changes to the device server, click the Apply
Settings button.

Note: Clicking OK on each page does not change the configuration on the device.

Clicking the OK button tells the MatchPort what changes to use; the Apply Settings
makes the changes permanent and reboots the Micro125.

Micro125 User Guide 33

Apply Defaults

5: Configuration Using Web Manager

Figure 5-9. Applying Settings

1. Click the Apply Factory Defaults button to set the device server back to the default
settings. For details see Default Settings on page 61.

2. Click Yes to set factory settings, or click No to cancel.

Figure 5-10. Applying Default Settings

Micro125 User Guide 34

6. Configuration via Telnet or Serial Port (Setup Mode)

You must configure the unit so that it can communicate on a network with your serial device.
As an alternative to using a web browser, as described in the previous chapter, you can use
the following procedures remotely or locally:

 Use a Telnet connection to configure the unit over the network.
 Use a terminal or terminal emulation program to access the serial port locally.

The series of prompts at which you enter configuration settings is called Setup Mode.

Note: Detailed information about other setup methods is available from your Lantronix Sales

Associate.

The unit’s configuration is stored in nonvolatile memory and is retained without power. You
can change the configuration at any time. The unit performs a reset after the configuration
has been changed and stored.

This chapter tells you how to access Setup Mode and the general procedure for using it. To
complete the configuration, continue with Chapters 7 S etup Mod e: Ser ver Confi gu r ation , 8

Setup Mode: Channel Configurat io n, and 9 Setup Mode: Advanced Se tti ngs .

Note: The menus in the configuration chapters show a typical device. Your device may have

different configuration options.

Accessing Setup Mode

Telnet Connection

To configure the unit over the network, establish a Telnet connection to port 9999.

Note: You can also use DeviceInstaller to access Telnet. Select the device from the main

window list, and click the Telnet Configuration tab. Skip steps 1 and 2.

Micro125 User Guide 35

6: Configuration via Telnet or Serial Port (Setup Mod e)

To establish a Telnet connection:

1. From the Windows Start menu, click Run and type the following command, where x.x.x.x
is the IP address, and 9999 is the unit’s fixed network configuration port number:

Windows: telnet x.x.x.x 9999

UNIX: telnet x.x.x.x:9999

2. Click OK. The following information displays.

Figure 6-1. MAC Addr ess

MAC address 00204AAE0412
Software version V6.8.0.4 (121207) M125
AES library version 1.8.2.1

Press Enter for Setup Mode

3. To enter Setup Mode, press Enter within 5 seconds. The configuration settings display,
followed by the Change Setup menu.

Figure 6-2. Setup Menu Options

Change Setup:
0 Server
1 Channel 1
2 Channel 2
5 Expert
6 Security
7 Defaults
8 Exit without save
9 Save and exit Your choice?

4. Select an option on the menu by entering the number of the option in the Your choice ?
field and pressing Enter.

5. To enter a value for a parameter, type the value and press Enter, or to confirm a current
value, just press Enter.

6. When you are finished, save the new configuration (option 9). The unit reboots.

Serial Port Connection

To configure the unit through a serial connection:

1. Connect a console terminal or PC running a terminal emulation program to your unit's
serial port.

2. Set the terminal emulator serial port settings to 9600 baud, 8 bits, no parity, 1 stop bit, no
flow control.

Note: The Micro125 always uses these serial port settings on boot-up.

3. Reset the Micro125 unit by cycling the unit's power (turning the power off and back on).
Immediately upon resetting the device, enter three lowercase x characters (xxx).

Micro125 User Guide 36

Note: The easiest way to enter Setup Mode is to hold down the x key at the terminal (or

emulation) while resetting the unit. You must do this within three seconds of resetting the

Micro125.

At this point, the screen display is the same as when you use a Telnet connection. To
continue, go to step 4, abo ve under the section, Telnet Connection

.

Exiting Setup Mode

To exit setup mode, utilize one of the following two options:

 To save all changes and reboot the device, select option 9 Save and exit from the

C

hange Setup menu. All values are stored in nonvolatile memory.

6: Configuration via Telnet or Serial Port (Setup Mod e)

 To exit the configuration mode without saving any changes or rebooting, select option

xit without save from the Change Setup menu.

E

8

Micro125 User Guide 37

AutoIP

0

DHCP

1

BootP

2

7. Setup Mode: Server Configuration

This chapter explains how to configure the network settings.

Note: Current values appear in parentheses.

Server Configuration (Option 0)

The unit’s basic network parameters display when you select Server configuration (option

0). The IP Address, Set Gateway IP Address, and Netmask fields display the current

values.

IP Address : (000) .(000) .(000) .(000)
Set Gateway IP Address (N) ?
Netmask: Number of Bits for Host Part (0=default) (0)
Set DNS Server IP addr (N) ?
Change Telnet/Web Manager password (N) ?
Change DHCP device name (not set) ? (N) ?
Enable DHCP FQDN option : (N) ?

IP Address

If DHCP is not used to assign IP addresses, enter the IP address manually. The IP address
must be set to a unique value in the network. Enter each octet and press Enter between
each section. The current value displays in parentheses.

If DHCP is used, the third octet of the IP address sets the BootP/DHCP/AutoIP options. The
following table shows the bits you can manually configure to force the Micro125 to disable
AutoIP, DHCP, or Boo tP. To disable an option, set the appropriate bit.

For example, if the third octet is 0.0.5.0, the AutoIP and BootP options are disabled; only
DHCP is enabled. (The value 5 results from adding the binary equivalents of 0 and 2.) This is
the most common setting when using DHCP.

IP Address : (000) (000) (000) (000) _

Table 7-1. BootP/DHCP/AutoIP options

Options Bit

Micro125 User Guide 38

Set Gateway IP Address

A

24

255.0.0.0

B

16

255.255.0.0

C

8

255.255.255.0

The gateway address, or router, allows communication to other LAN segments. The gateway
address should be the IP address of the router connected to the same LAN segment as the
unit. The gateway address must be within the local network. The default is N (No), meaning
the gateway address has not been set. To set the gateway address, type Y and enter the
address.

Set Gateway IP Address (N) ? Y
Gateway IP addr ( 0) ( 0) ( 0) ( 0)_

Netmask: Number of Bits for Host Part

A netmask defines the number of bits taken from the IP address that are assigned for the
host part.

Netmask: Number of Bits for Host Part (0=default) (0) _

Note: Class A: 24 bits; Class B: 16 bits; Class C: 8 bits

7: Setup Mode: Server Configura tio n

The unit prompts for the number of host bits to be entered, then calculates the netmask,
which appears in standard decimal-dot notation (for example, 255.255.255.0) when the saved
parameters display.

Table 7-2. Standard IP Network Netmasks

Network Class Host Bits Netmask

Set DNS Server IP Address

The DNS server allows the name of a remote machine to be resolved automatically. The
default is N (No), indicating the DNS server address has not been set. To set the DNS server
address, type Y. At the prompt, enter the DNS server address. If the device is DHCP
enabled, the DHCP server provides the DNS server IP address, which will override this
configured value.

Note: This setting is applicable only in Manual Connection mode.

Set DNS Server IP addr (N) ?

Micro125 User Guide 39

Change Telnet/Web-Manager Password

Setting the Telnet/Web-Manager password prevents unauthorized access to the setup menu
through a Telnet connection to port 9999 or through web pages. The password must have 4
characters.

Change Telnet/Web-Manager password (N) ? _

An enhanced password setting (for Telnet access only) of 16 characters is available under

Security Settings (Option 6) on page 58.

Note: You do not need a password to access the Setup Mode window by a serial connection.

DHCP Name

If a DHCP server has automatically assigned the IP address and network settings, you can
discover the unit by using the DeviceInstaller network search feature.

There are three methods for assigning DHCP names to the unit.
Default DHCP Name: If you do not change the DHCP name, and you are using an IP of

0.0.0.0, then the DHCP name defaults to CXXXXXX (XXXXXX is the last 6 digits of the MAC

address shown on the label on the bottom/side of the unit). For example, if the MAC address
is 00-20-4A-12-34-56, then the default DHCP name is C123456.

7: Setup Mode: Server Configura tio n

Custom DHCP Name: You can create your own DHCP name. If you are using an IP
address of 0.0.0.0, then the last option in Server configuration is Change DHCP device
name. This option allows you to change the DHCP name to an alphanumeric name (LTX in
our example).

Change DHCP device name (not set) ? (N) Y
Enter new DHCP device name : LTX

Numeric DHCP Name: You can change the DHCP name by specifying the last octet of the
IP address. When you use this method, the DHCP name is LTXYY where YY is what you
chose for the last octet of the IP address. If the IP address you specify is 0.0.0.12, then the
DHCP name is LTX12. This method only works with 2 digit numbers (01-99).

Micro125 User Guide 40

8. Setup Mode: Channel Configuration

This chapter explains how to configure the serial port. Two channels may be configured in
Micro125: Channel 1 and Channel 2.

Note: The directions for configuring Channel 1 provided below may also be used for

Channel 2.

Channels

Select Channel 1 (option 1) from the Change Setup menu to define how the serial port
responds to network and serial communications. The following sections describe the
configurable parameters within the Channel configuration menu.

Figure 8-1. Serial Port Parameters

Baudrate (9600) ?
I/F Mode (4C) ?
Flow (00) ?
Port No (10001) ?
ConnectMode (C0) ?
Send '+++' in Modem Mode (Y) ?
Show IP addr after 'RING' (Y) ?
Auto increment source port (N) ?
Remote IP Address : (000) .(000) .(000) .(000)
Remote Port (0) ?
DisConnMode (00) ?
FlushMode (00) ?
DisConnTime (00:00) ?:
SendChar 1 (00) ?
SendChar 2 (00) ?

Baudrate

The unit and attached serial device, such as a modem, must agree on a speed or baud rate
to use for the serial connection. Valid baud rates are 300, 600, 1200, 2400, 4800, 9600
(default), 19200, 38400, 57600, 115200, and 230400 bits per second. The current va lue is
displayed in parentheses. Entering a baud rate of 00 in channel settings in a telnet sessions
disables the serial port.

Baudrate (9600) ? _

Micro125 User Guide 41

I/F (Interface) Mode

RS-232C

(1)

0

0

7 Bit

1

0

8 Bit

1

1

No Parity

0

0

Even Parity

1

1

Odd Parity

0

1

1 stop bit

0

1

2 stop bits

(1)

1

1

RS-232C, 8-bit, No Parity, 1 stop bit

0100 1100

4C

RS-232C, 7-bit, Even Parity, 1 stop bit

The Interface (I/F) Mode is a bit-coded b yte entered in hexadecimal notation.

I/F Mode (4C) ? _

he following table displays available I/F Mode options:

T

Note: All bit positions in the table that are blank represent “don’t care” bits for that particular

option, which can be set to either a 0 or 1 value.

I/F Mode Option 7 6 5 4 3 2 1 0

8: Setup Mode: Channel Configurat io n

Table 8-1. Interface Mode Options

(1) 2 stop bits are implemented by the software. This might influence performance.

T

he following table demonstrates how to build some common Interface Mode settings:

I/F Mode

Additional settings for RS-422 4-wire and RS-485 2-wire are available on the
Micro125. However, this feature is only supported on channel 1.

Note: All bit positions in the table that are blank represent “don’t care” bits, for that particular

option, which can be set to either a 0 or 1 value.

Table 8-2. Common Interface Mode Settings

Common I/F Mode Setting Binary Hex

0111 1000 78

Micro125 User Guide 42

RS-422 4-wire

0

1

RS-485 2-wire

1

1

Flow

No flow control

XON/XOFF flow control

01

Hardware handshake with RTS/CTS lines

02

1 – 1024

Reserved (well known ports)

9999

Telnet setup

14000-14009

Reserved for Redirector

30704

Reserved (77F0h)

30718

Reserved (77FEh)

8: Setup Mode: Channel Configuratio n

Table 8-3. Interface Mode Options

I/F Mode Option 7 6 5 4 3 2 1 0

Flow control sets the local handshaking method for stopping serial input/output.

Flow (00) ? _

Use the following table to select flow control options:

Table 8-4. Flow Control Options

Flow Control Option Hex

00

Port Number

The setting represents the source port number in TCP connections. It is the number that
identifies the channel for remote initiating connections.

The default setting for Port 1 is 10001. The range is 1-65535, except for the following
reserved port numbers:

WARNING: We recommend that you not use the reserved port numbers

for this setting as incorrect operation may result.

XON/XOFF pass characters to host

Port No (10001) ? _

Table 8-5. Reserved Port Numbers

Port Numbers Reserved for

05

Use Port 0 for the outgoing local port to change with each connection. The port range is
50,000 to 59,999. Each subsequent connection increments the number by 1 (it wraps back
around to 50,000).

Only use this automatic port increment feature to initiate a connection using TCP. Set the port
to a non-zero value when the unit is in a passive mode or when using UDP instead of TCP.

Micro125 User Guide 43

Connect Mode

a) Incoming Connection

Never accept incoming

0 0 0

Accept with active Modem Control In

0 1 0

Always Accept

1 1 0

b) Response

Nothing (quiet)

0

Character response (C=connect,
D=disconnect, N=unreachable)

c) Active Startup

No active startup

0 0 0

0

With any character

0 0 0

1

With active Modem Control In

0 0 1

0

With a specific start character

0 0 1

1

Manual connection

0 1 0

0

Autostart

0 1 0

1

Hostlist

0 0 1 0

d) Datagram Type

Directed UDP

1 1 0

0

e) Modem Mode

No Echo

0 0 1 1

Data Echo & Modem Response
(Numeric)

Data Echo & Modem Response
(Verbose)

Modem Response Only (Numeric)

0 0 1 1 1

1

Connect Mode defines how the unit makes a connection, and how it reacts to incoming
connections over the network.

Enter Connect Mode options in hexadecimal notation.

Note: All bit positions in the table that are blank represent “don’t care” bits, for that particular

option, which can be set to either a 0 or 1 value.

Connect Mode Option 7 6 5 4 3 2 1 0

8: Setup Mode: Channel Configurat io n

ConnectMode (C0) ? _

Table 8-6. Connect Mode Options

1

0 1 1 1 1

Micro125 User Guide 44

0 1 1 1 0

8: Setup Mode: Channel Configurat io n

Modem Response Only (Verbose)

Never Accept Incoming

Rejects all external connection attempts.

Accept with active Modem
Control In

Accepts external connection requests only when the Modem
Control In input is asserted. Cannot be used with Modem Mode.

Always Accept

Accepts any incoming connection when a connection is not
already established. Default setting.

Character Response

A single character is transmitted to the serial port when there is a

(quiet).

No Active Startup

Does not attempt to initiate a connection under any
circumstance. Default setting.

With Any Character

serial port.

With active Modem Control
In

Attempts to connect when the Modem Control In in put cha n ges
from not asserted to asserted.

With a Specific Start
Character

from the serial port. The default start character is carriage return.

Manual Connection

Attempts to connect when directed by a command string

between each pair of IP address numbers.

Connect Mode Option 7 6 5 4 3 2 1 0

0 0 1 1 1 0

a) Incoming Connection

Incoming Connection Mode Description

b) Response

Response Mode Description

change in connection state:
C = connected, D = disconnected, N = host unreachable.
The IP address of the host connecting to the CoBos device will
be provided when you use verbose mode.

This option is overridden when the Active Start Modem Mode
or Active Start Host List is in effect. Default setting is Nothing

c) Active Startup

Active Startup Mode Description

Attempts to connect when any character is received from the

Attempts to connect when it receives a specific start character

received from the serial port. The first character of the command
string must be a C (ASCII 0x43), and the last character must be
either a carriage return (ASCII 0x0D) or a line feed (0x0A). No
blanks or space characters may be in the command string.
Between the first and last command string characters must be a
full or partial destination IP address and may be a destination
port number.

The IP address must be in standard decimal-dot notation and
may be a partial address, representing the least significant 1, 2,
or 3 bytes of the remote IP address. The period is required

Micro125 User Guide 45

Active Startup Mode Description

example, C50.1/23 would connect you to 129.1.50.1 and port 23.

If an IP address does not follow the first command string

forward slash (/) or a colon ( : ).

Complete override; connection is started with host 121.2.4.5,
port 1

C5

Connects to 129.1.2.5, port 1234

C28.10/12

C0.0.0.0/0

Enters Monitor Mode

Cwww.lantronix.com/80

Tries to connect to the Lantronix web server if the
DNS server database.

Autostart (Automatic

If you enable Autostart, the unit automatically connects to the
starts.

Hostlist

If you enable this option, the device server scrolls through the

the hostlist option is enabled.

If present, the port number must follow the IP address, must be
presented as a decimal number in the range 1-65535, and must
be preceded by a forward slash (ASCII 0x2F). The slash
separates the IP address and the port number. If you omit the
port number from a command string, the internally stored remote
port number starts a connection.

If a partial IP address is presented in a command string, it is
interpreted to be the least significant bytes of the IP address and
uses the internally stored remote IP address to provide the most
significant bytes of the IP address. If the IP address entered is

0.0.0.0/0, the device server enters Monitor Mode.

For example, if the remote IP address already config ured in the
unit is 129.1.2.3, then an example command string would be
C3/7. (This would connect to 129.1.2.3 and port 7.) You may
also use a different ending for the connection str i ng. For

character (which is "C"), the subsequent character string is
interpreted as the host name and domain to be used in DNS
lookup. This character string can include a destination port
number as well. The port number can be preceded by either a

8: Setup Mode: Channel Configurat io n

Command String Result if remote IP is 129.1.2.3 and remote port is 1234

C121.2.4.5/1

Connection)

Table 8-7. Manual Connection Address Example

Connects to 129.1.28.10, port 12

<hostname:domain> (www.lantronix.com) is configur ed in the

remote IP address & remote port specified when the firmware

hostlist until it connects to a device listed in the hostlist table.
Once it connects, the unit stops trying to connect to any others.
If this connection fails, the unit continues to scroll through the
table until it is able to connect to another IP in the hostlist.

Hostlist supports a minimum of 1 and a maximum of 12 entries.
Each entry contains the IP address and the port number.
The hostlist is disabled for Manual and Modem Modes. The unit
does not accept a data connection from a remote device when

Micro125 User Guide 46

8: Setup Mode: Channel Configurat io n

Figure 8-2. Hostlist Option

Baudrate (9600) ?
I/F Mode (4C) ?
Flow (00) ?
Port No (10001) ?
ConnectMode (25) ?
Send '+++' in Modem Mode (Y) ?
Auto increment source port (N) ?

Hostlist :

01. IP : 172.019.000.001 Port : 00023

02. IP : 172.019.000.002 Port : 03001

03. IP : 172.019.000.003 Port : 10001

Change Hostlist ? (N) ? Y

01. IP address : (172) .(019) .(000) .(001) Port : (23) ?

02. IP address : (172) .(019) .(000) .(002) Port : (3001) ?

03. IP address : (172) .(019) .(000) .(003) Port : (10001) ?

04. IP address : (000) .(000) .(000) .(000)
Hostlist :

01. IP : 172.019.000.001 Port : 00023

02. IP : 172.019.000.002 Port : 03001

03. IP : 172.019.000.003 Port : 10001

DisConnMode (00) ?
FlushMode (00) ?
DisConnTime (00:00) ?:
SendChar 1 (00) ?
SendChar 2 (00) ?

o enable the hostlist:

T

1. Enter a Connect Mode of 0x20 (2X), where X is any digit. The menu shows you a list of
current entries already defined in the product.

2. To delete, modify, or add an entry, select Yes. If you enter an IP address of 0.0.0.0, tha

ry and all others after it are deleted.

ent

3. After completing the hostlist, repeat the previous step if necessary to edit the hostlist
again.

4. For Retrycounter, enter the number of times the Lantronix unit should try to make

a
good network connection to a hostlist entry that it has successfully ARPed. The range is
1-15, with the default set to 3.

5. For Retrytimeout, enter the number of seconds the unit should wait before failing an
at

tempted connection. The time is stored as units of milliseconds in the range of 10-

65535. The default is 250.

t

Micro125 User Guide 47

8: Setup Mode: Channel Configurat io n

Directed UDP

When selecting this option, you are prompted for the Datagram type.

data.

Without Echo

In Modem Mode, echo refers to the echo of all of the characters

typed).

Data Echo & Modem

Full Verbose: The unit echoes modem commands and responds to a

responds to a command with a numeric response.

Modem Responses

Full Verbose: The unit does not echo modem commands and

responds to a command with a numeric response.

d) Datagram Type

Datagram Type Description

Enter 01 for directed or broadcast UDP. Datagrams of type 01 can be
sent as a broadcast by enabling the Send as Broadcast option. The
default is not to broadcast.

When the UDP option is in effect, the unit never attempts to initiate a
TCP connection because it uses UDP datagrams to send and receive

e) Modem Mode

In Modem (Emulation) Mode, the unit presents a modem interface to the attached serial
device. It accepts AT-style modem commands and handles the modem signals correctly.

Normally, there is a modem connected to a local PC and a modem connected to a remote
machine. A user must dial from the local PC to the remote machine, accumulating phone
charges for each connection. Modem Mode allows you to replace modems with Micro125
units, and to use an Ethernet connection instead of a phone call. By not having to change
communications applica tio ns, you avoid pote nti al ly expensive phone calls.

To select Modem Mode, set the Connect Mode to C6 (no echo), D6 (echo with full verbose),
D7 (echo with numeric response), CF (modem responses only, numeric response), or CE
(modem responses only, full verbose).

Note: If the unit is in Modem Mode, and the serial port is idle, the unit can still accept network

TCP connections to the serial port if Connect Mode is set to C6 (no ec ho), D6 (echo with full
verbose), D7 (echo with numeric response, CF (modem responses only, nu meric res pons e),
or CE (modem responses only, full verbose).

Table 8-8. Modem Modes

Modem Mode Description

entered in command mode; it does not mean to echo data that is
transferred. Quiet Mode (without echo) refers to the modem not
sending an answer to the commands received (or displaying what was

Response

Only

command with a message string shown in the table below.
Numeric Response: The unit echoes modem comma nd s and

responds to a command with a message string shown in the table
below.
Numeric Response: The unit does not echo modem commands and

Micro125 User Guide 48

8: Setup Mode: Channel Configurat io n

Full Verbose

OK

Command was executed without error.

CONNECT

A network connection has been established.

NO CARRIER

A network connection has been closed.

A remote device, having IP address n.n.n.n, is connecting to this
device.

Numeric Response

0

OK 1 Connected

2

Ring

3

No Carrier

4

Error

Table 8-9. Modem Mode Messages

Message Meaning

RING n.n.n.n.

Received commands must begin with the two-character sequence AT and be terminated with
a carriage return character.

The unit ignores any character sequence received not s tar ting wit h AT, and only recognizes
and processes single AT-style commands. The unit treats compound AT commands as
unrecognized commands.

If the Full Verbose option is in effect, the unit responds to an unrecognized command string
that is otherwise formatted correctly (begins with AT and ends with carriage return) with the
"OK" message and takes no further action.

If the Numeric Response option is in effect, the unit responds to an unrecognized command
string that is otherwise formatted correctly with the "OK" message and takes no further action.

When an active connection is in effect, the unit transfers data and does not process
commands received from the serial interface.

When a connection is terminated or lost, the unit reverts to command mode.
When an active connection is in effect, the unit terminates the connection if it receives the

following sequence from the attached serial device:

 No serial data is received for one second.
 The character sequence +++ is received, with no more than one second between each

two characters.

 No serial data is received for one second after the last + character. At this time, the unit

responds affirmatively per the selected echo/response mode.

 The character string ATH is received, terminated with a carriage return. The unit

responds affirmatively according to the selected echo/response mode and drops the
network connection. The serial interface reverts to accepting command strings.

Micro125 User Guide 49

8: Setup Mode: Channel Configuration

ATDTx.x.x.x,pppp,

ATDTx.x.x.x:pppp

number defined within the unit.

n>1-9 is invalid.

n=1 enables character echo and responses.

n=1 enables full verbose.

If this sequence is not followed, the unit remains in data transfer mode.

Table 8-10. Modem Mode Commands

Modem Mode
Command

ATDTx.x.x.x/pppp, or

ATDTx.x.x.x

ATD0.0.0.0

ATD or ATDT

ATDx.x.x.x

ATH

ATS0=n

Function

Makes a connection to an IP address (x.x.x.x) and a remote port
number (pppp).

Makes a connection to an IP address (x.x.x.x) and the remote port
number defined within the unit.

Forces the unit into Monitor Mode if a remote IP address and port
number are defined within the unit.

Forces the unit into Monitor Mode if a remote IP address and port
number are not defined within the unit.

Makes a connection to an IP address (x.x.x.x) and the remote port

Hangs up the connection (Entered as +++ATH ).
Enables or disables connections from the network going to the serial

port.
n=0 disables the ability to make a connection from the network to the
serial port.

n=1-9 enables the ability to make a connection from the network to
the serial port.

Enables or disables character echo and responses.

ATEn

ATVn

n=0 disables character echo and responses.

Enables numeric response or full verbose.
n=0 enables numeric response.

Note: The unit recognizes these AT commands as single commands such as ATE0 or ATV1;

it does not recognize compound commands such as ATE0V.

Send the Escape Seque nce (+++) in Modem Mode

Send ‘+++’ in Modem Mode (Y) ? _

Disable or enable the Micro125’s ability to send the escape sequence. The default is Y (Yes)
(send the escape sequence).

Micro125 User Guide 50

Show IP addr after 'RING'

Show IP addr after ‘RING’ (Y) ?

Disable or enable the Micro125's ability to show the IP address after RING in Modem Mode.
The default is Y (Yes), to show the IP address.

Auto Increment Source Port

Auto increment source port (N) ? _

Y (Yes) auto increment the source port. The Micro125 increments the port number used with
each new connection.

Remote IP Address

This is the destination IP address used with an outgoing connection.

Remote IP Address : (000) (000) (000) (000)_

8: Setup Mode: Channel Configurat io n

Note: This option does not display when Hostlist is enabled from the ConnectMode prompt

(see Connect Mode on page 44 for more information).

Remote Port

You must set the remote TCP port number for the unit to make outgoing connections. This
parameter defines the port number on the target host to which a connection is attempted.

To connect an ASCII terminal to a host using the unit for login purposes, use the remote port
number 23 (Internet standard port number for Telnet services).

Note: This option does not display when Hostlist is enabled from the ConnectMode prompt

(see Connect Mode on page 44 for more information).

DisConnMode

This setting determines the conditions under which the unit will cause a network connection
to terminate.

Notes:

Remote Port (00) ? _

DisConnMode (00) ? _

 In DisConnMode (Disconnect Mode), Modem Control In drop either drops the connection

or is ignored.

 All bit positions in the table that are blank represent “don’t care” bits, for that particular

option, which can be set to either a 0 or 1 value.

Micro125 User Guide 51

8: Setup Mode: Channel Configurat io n

Disconnect when Modem Control In is not asserted

(6)

1

Ignore Modem Control In

0

(1)

(2)

(3)

Disable hard disconnect

1

(4)

(5)

Table 8-11. Disconnect Mode Options

Disconnect Mode Option 7 6 5 4 3 2 1 0

Telnet Com Port Cntrl and terminal type setup

Channel (port) password

Hard disconnect

State LED off with connection

Disconnect with EOT (^D)

) The Telnet Com Port Control feature is used in conjunction with Com Port Redirector. The unit

(1

sends the Terminal Type upon an outgoing connection.
(2) A password is required for a connection to the serial port from the network.
(3) The TCP connection closes even if the remote site does not acknowledge the disconnection.
(4) W hen there is a network connection to or from the serial port, the state LED t urns off instead of

blinking.
(5) When Ctrl+D or Hex 04 is detected, the connection is dropped. Both Telnet Com Port Cntrl and

Disconnect with EOT must be enabled for Disconnect with EOT to function properly. Ctrl+D is only
detected going from the serial port to the network.

(6) When Modem Control In t ransitions from a high state to a low state, the network connection to or

from the serial port drops.

1

1

0

1

1

Micro125 User Guide 52

Flush Mode (Buffer Flushing)

Input Buffer (Serial to Network)

Clear with a connection initiated from the device to the network

1

Clear with a connection initiated from the network to the device

1

Clear when the network connection to or from the device
is disconnected

Output Buffer (Network to Serial)

Clear with a connection initiated from the device to the network

1

Clear with a connection initiated from the network to the device

1

Clear when the network connection to or from the device
is disconnected

Alternate Packing Algorithm (Pack Control)

Enable

1

Packing Interval

Using this parameter, you can control line handling and network buffers with connection
startup and disconnect.

FlushMode (00) ? _

You can also select between two different packing algorithms.

Note: All bit positions in the table that are blank represent “don’t care” bits, for that particular

option, which can be set to either a 0 or 1 value.

Table 8-12. Flush Mode Options

Function 7 6 5 4 3 2 1 0

8: Setup Mode: Channel Configurat io n

Pack Control

The packing algorithms define how and when packets are sent to the network. The standard
algorithm is optimized for applications in which the unit is used in a local environment,
allowing for very small delays for single characters, while keeping the packet count low. The
alternate packing algorithm minimizes the packet count on the network and is especially
useful in applications in a routed Wide Area Network (WAN). Adjusting parameters in this
mode can economize the network data stream.

Pack control settings are enabled in Flush Mode. Set t his value t o 00 if you do not need
specific functions.

1

1

Note: All bit positions in the table that are blank represent “don’t care” bits, for that particular

option, which can be set to either a 0 or 1 value.

Table 8-13. Pack Control Options

Option 7 6 5 4 3 2 1 0

Micro125 User Guide 53

8: Setup Mode: Channel Configurat io n

Interval: 12ms

0

0

Interval: 52ms

0

1

Interval: 250ms

1

0

Interval: 5sec

1

1

None

0

0

One

0

1

Two

1

0

Send Characters

2-Byte Send Character Sequence

Send Immediately After Send chars

1

Option 7 6 5 4 3 2 1 0

Trailing Characters

1

Packing Interval

Packing Interval defines how long the unit should wait before sending accumulated
characters. This wait period is between successive network segments containing data. For
alternate packing, the default interval is 12 ms.

Trailing Characters

In some applications, CRC, Checksum, or other trailing characters follow the end-of­sequence character; this option helps to adapt frame transmission to the frame boundary.

Send Characters

 If 2-Byte Send Chara ct er Sequen c e is enabled, the unit interprets the sendchars as a 2-

byte sequence; if this option is not enabled, the unit interprets them independently.

 If Send Immediately After Characters is not set, any characters already in the serial

buffer are included in the transmission after a "transmit" condition is found. If this option is
set, the unit sends immediately after recognizing the transmit condition (sendchar or
timeout).

Note: A transmission might occur if status information needs to be exchanged or an

acknowledgment needs to be sent.

DisConnTime (Ina cti vity Timeout)

Use this parameter to set an inactivity timeout. The unit drops the the TCP connection to port
10001/10002* if there is no activity on the serial line before the set time expires. Enter time in
the format mm:ss, where m is the number of minutes and s is the number of seconds.

Note*: The default port number for Port 1 is 10001 and 10002 for Port 2. However,

port numbers may be set to a different value.

Micro125 User Guide 54

DisConnTime (00:00) ?:

To disable the inactivity timeout, enter 00:00. Range is 0 (disabled) to 5999 seconds (99
minutes, 59 seconds). Default is 0.

Send Characters

Enter up to two characters in hexadecimal representation in sendchar.

SendChar 1 (00) ? _
SendChar 2 (00) ? _

If the unit receives a character on the serial line that matches one of these characters, it
sends the character immediately, along with any awaiting characters, to the TCP connection.
This action minimizes the response time for specific protocol characters on the serial line (for
example, ETX, EOT). Setting the first sendchar to 00 disables the recognition of the
characters. Alternatively, the unit can interpret two characters as a sequence (see Pack

Control on page 53).

Telnet Terminal Type

8: Setup Mode: Channel Configurat io n

This parameter displays only if you enabled the terminal type option in Disconnect Mode.
With this option enabled, you can use the terminal name for the Telnet terminal type. Enter
only one name.

With terminal type option enabled, the unit also reacts to the EOR (end of record) and binary
options, useful for applications like terminal emulation to IBM hosts.

Channel (Port) Password

This parameter appears only if the channel (port) password option is enabled in Disconnect
Mode. With this option enabled, you can set a password on the serial port.

Micro125 User Guide 55

9. Setup Mode: Advanced Settin gs

TCP Keepalive time in s
(1s – 65s; 0s=disable)

ARP Cache timeout in s (1s – 600s)

600

Disable Monitor Mode @ bootup

No

HTTP Port Number (1-65535)

80

MTU Size (512 – 1400)

0 (resulting in an operational value of 1400)

TCP Re-Transmission Timeout
(500-4000)

500 (msec)

Enable alternate MAC

No (OEM use only)

Ethernet connection type

0 (resulting in auto-negotiation)

Expert Settings (Option 5)

Note: You can change the Enable alternate MAC setting using telnet or serial connections

only. It is not available through the Web-Manager.

CAUTION: Only an expert should change these parameters. You must d efinitely know

the consequences the changes might have.

Figure 9-1. Expert Settings

TCP Keepalive time in s (1s – 65 s; 0s-disable): (45) ?
ARP Cache timeout in s (1s – 600s) : (600) ?
Disable Monitor Mode @ bootup (N) ?
HTTP Port Number : (80) ?
MTU Size (512 – 1400): (1400) ?
TCP Re-transmission Timeout (500 - 4000) (ms): (500) ?
Enable alternate MAC (N) ?
Ethernet connection type: (0) ?

The default settings are listed below:

Table 9-1. Expert Settings: Details Settings

Device Details Settings Description

45

TCP Keepalive Time in Seconds

This option allows you to change how many seconds the unit waits during a silent connection
before attempting to see if the currently connected network device is still on the network. If
the unit gets no response, it drops that connection.

TCP Keepalive time in s (1s – 65s; 0s=disable): (45)? _

Micro125 User Guide 56

9: Setup Mode: Advanced Settings

ARP Cache Timeout in Seconds

Whenever the unit communicates with another device on the network, it adds an entry into its
ARP table. The ARP Cache timeout option allows you to define how many seconds (1-600)
the unit will wait before timing out this table.

ARP Cache timeout in s (1s - 600s) : (600) ?

Disable Monitor Mode at Bootup

This option allows you to disable all entries into Monitor Mode during startup, except for the
‘xxx’ sequence. This prevents entry using yyy, zzz, xx1, and yy1 key sequences (only during
the bootup sequence). The default for Monitor Mode at bootup is N (No). (See 11: Monitor

Mode.)

Disable Monitor Mode @ bootup (N) ? _

HTTP Port Number

This option allows the configuration of the web server port number. The valid range is
1-65535. The default HTTP port number is 80.

HTTP Port Number : (80) ? _

MTU Size

The Maximum Transmission Unit (MTU) is the largest physical packet size a network can
transmit for TCP and UDP. Enter between 512 and 1400 bytes. The default is 1400 bytes.

MTU Size: (1400) ? _

TCP Re-transmission Timeout

This feature allows the configuration of the desired TCP re-transmission timeout value. If the
ACK is not received for a packet sent from the Micro125 device, then the unit will retransmit
the data. The valid range is 500-4000 msec.

TCP Re-transmission Timeout (500 - 4000) (ms): (500) ?

Enable Alternate MAC

If necessary, enable the alternate MAC address (if specified in the OEM setup record).

Enable alternate MAC (N) ? _

Ethernet Connection Type

The Micro125 allows for the Ethernet speed and duplex to be manually configured. Enter 0
for auto-negotiation (default). To select the speed and duplex, enter one of the following: 2
(10Mbit/half duplex), 3 (10Mbit/full duplex), 4 (100Mbit/half duplex), or 5 (100Mbit/full duplex).

Ethernet connection type: (0) ? _

Micro125 User Guide 57

Security Settings (Option 6)

Note: You can change security settings by means of Telnet or serial connections only, not on

the Web-Manager. We recommend that you set security over the dedicated network or over
the serial setup to prev e nt eav es drop pin g.

CAUTION: Disabling both Telnet Setup and Port 77FE will prevent users

from accessing the setup menu from the network. Disabling Port 77FE
also disables the Web from configuring the device.

Select 6 to configure security settings.

Disable SNMP (N) ?
SNMP Community Name (public):
Disable Telnet Setup (N)?
Disable TFTP Firmware Update (N)?
Disable Port 77FEh (N)?
Disable Web Server (N)?
Disable Web Setup (N)?
Disable ECHO ports (Y)?
Enable Encryption (N)?
Enable Enhanced Password (N)?

9: Setup Mode: Advanced Settings

Figure 9-2. Security Settings

Disable SNMP

This setting allows you to disable the SNMP protocol on the unit for security reasons.

Disable SNMP (N) ? _

SNMP Community Name

The SNMP Community Name is a required field for NMS to read or write to a device. Enter a
string of 1 to 13 characters.

SNMP Community Name (public): _

The default entry is public. The current value is displayed in parentheses.

Disable Telnet Setup

Note: If you choose to disable this option, keep in mind that disabling both Telnet Setup and

Port 77FE will prevent users from access ing the setup menu from the net w ork .

This setting defaults to the N (No) option. The Y (Yes) option disab les acc es s to Setup Mod e
by Telnet (port 9999). It only allows access locally using the web pages and the serial port of
the unit.

Disable Telnet Setup (N) ? _

Micro125 User Guide 58

9: Setup Mode: Advanced Settings

Disable TFTP Firmware Upgrade

This setting defaults to the N (No) option. The Y (Yes) option disables the use of TFTP to
perform network firmware upgrades. With this option, you can download firmware upgrades
over the serial port using DeviceInstaller’s Recover Firmware procedure. (See 10: Firmware

Upgrades.)

Disable TFTP Firmware Update (N) : _

Disable Port 77FE (Hex)

If you choose to disable this option, keep in mind that disabling both the Telnet Setup and
Port 77FE will prevent users from accessing the setup menu from the network. Port 77FE is
a setting that allows DeviceInstaller, WebManager, and custom programs to configure the
unit remotely. You may wish to disable this capability for security purposes.

Disable Port 77FEh(N) ?

Note: The default setting is the N (No) option, which enables remote configuration. You can

configure the unit by using DeviceInstaller, web pages, Telnet, or serial configuration. The Y
(Yes) option disables remote configuration and web sites. The Y (Yes) option also disables
many of the GUI tools for configuring the unit, including the embedded WebManager tool.

Disable Web Server

This setting defaults to the N (option). The Y (Yes) option disables the web server.

Disable Web Server (N) ? _

Disable Web Setup

The Y (Yes) option disables configuration using the Web-Manager. This setting defaults to
the N (option).

Disable Web Setup (N) ? _

Disable ECHO Ports

This setting controls whether port 7 echoes characters it receives.

Disable ECHO ports (Y) ? _

Enable Encryption

Rijndael is the block cipher algorithm chosen by the National Institute of Science and
Technology (NIST) as the Advanced Encryption Standard (AES) to be used by the US
government. The Micro125 supports 128-, 192-, and 256-bit encryption key lengths.

Note: Configuring encryption should be done through a local connection to the serial port of

the Micro125, or via a secured network connection. Initial configuration information, including
the encryption key, is sent in clear text over the network.

Micro125 User Guide 59

9: Setup Mode: Advanced Settings

To configure AES encryption on the Micro125:

Enable Encryption (N) Y
Key length in bits (0): 128
Change Keys (N) Y
Enter Keys: **-**-**-**-**-**-**-**-**-**-**-**-**-**-**-**-

hen prompted to enable encryption, select Y.

1. W

2. When prompted, enter the encryption key length. The Micro125 supports 128-, 192-, and
256-bit encryption key lengths.

3. When prompted to change keys, select Y.

4. At the Enter Keys prompt, enter your encryption key. The encryption keys are entered i
hex

adecimal. The hexadecimal values are echoed as asterisks to prevent onlookers from

seeing the key. Hexadecimal values are 0-9 and A-F.

 For a 128-bit key length, enter 32 hexadecimal characters.
 For a 192-bit key length, enter 48 hexadecimal characters.
 For a 256-bit key length, enter 64 hexadecimal characters

5. Continue pressing Enter until you return to the Change Setup menu.

6. From the Change Setup menu, select option 9 to save and exit.

Encryption only applies to the port selected for data tunneling (default 10001), regardless of
whether you are using TCP or UDP.

Generally, one of these situations applies:

 Encrypted Micro125-to-Micro125 communication. Be sure to configure both Micro125

devices with the same encryption key.

 Third-party application to Micro125-encrypted communication: Micro125 uses standar

AES encryption protocols. To communicate successfully, products and applications on
t

he peer side must use the same protocols and the same encryption key as the Micro125

 Lant

ronix Secure Com Port Redirector provides an encrypted connection from Windows­based applications to the Micro125. Information about SCPR is available on our web site,

www.lantronix.com/device-networking/utilities-tools/scpr. A 30-day trial version of SCPR

is available.

d

n

.

Note: Developers can license the Lantronix Encr ypt ion Library Su ite. Se e

www.lantronix.com/device-networking/utilities-tools.

Enable Enhanced Password

This setting defaults to the N (No) option, which allows you to set a 4-character password that
protects Setup Mode by means of Telnet and web pages. The Y (Yes) option allows you to
set an extended security password of 16-characters for protecting Telnet and Web Page
access.

Enable Enhanced Password (Y) ? _

Micro125 User Guide 60

Default Settings (Option 7)

Baudrate

9600

I/F Mode

4C (1 stop bit, no parity, 8 bit, RS-232C)

Flow

00 (no flow control)

Port number

10001 (channel 1)
10002 (channel 2)

Connect Mode

connection startup)

Send '+++' in Modem Mode

Enabled

Show IP addr after 'RING'

Enabled

Auto increment source port

Disable

Hostlist retry counter

3

Hostlist retry timeout

250 (msec)

Start character for serial channel 1

0x0D (CR)

All other parameters

0

TCP Keepalive time in s

45

ARP Cache timeout in s

600

Disable Monitor Mode @ bootup

No

HTTP Port Number

80

MTU Size

0 (resulting in an operational value of 1400)

TCP Re-Transmission Timeout
(500-4000)

500 (ms)

Alternate MAC

Disabled ( for OEM use only)

Ethernet Connection Type

0 (auto-negotiate)

Select 7 to reset the unit’s channel configuration and expert settings to the default settings.
The server configuration settings for IP address, gateway IP address, and netmask remain
unchanged. The specific settings that this option changes are listed below:

Channel 1 and Channel 2 Configuration Defaults

Channel Setting Default Configuration

9: Setup Mode: Advanced Settings

C0 (always accept incoming connection; no active

Expert Settings Defaults

Expert Setting Default Configuration

Micro125 User Guide 61

Security Settings Defaults

Disable SNMP

No

SNMP community name

public

Disable Telnet setup

No

Disable TFTP Firmware Update

No

Disable Port 77FEh

No

Disable Web Server

No

Disable Web Setup

No

Disable ECHO ports

Yes

Enable Encryption

No

Enable Enhanced Password

No

Security Setting Default Configuration

9: Setup Mode: Advanced Settings

Micro125 User Guide 62

10. Firmware Upgrades

ROM File

COB

m125e_6804.rom

m125_webm_1903.cob

Obtaining Firmwa re

You can obtain the most up-to-date firmware and release notes for the unit from the Lantronix
web site (

ftp.lantronix.com/pub).

(

Reloading Firmwa re

There are several ways to update the unit's internal operational code (*.ROM): using
DeviceInstaller (the pref er r ed wa y), using TFTP, or using the serial port. You can also update
the unit's internal Web interface (*.COB) using TFTP or DeviceInstaller.

Here are typical names for those files. Check the Lantronix web site for the latest versions
and release notes.

www.lantronix.com/support/downloads) or by using anonymous FTP

Table 10-1. Firmware Files

Please refer to the DeviceInstaller online Help for information about reloading firmware using
DeviceInstaller. The other methods are discussed below.

Using TFTP: Graphical User Interface

To download new firmware from a computer:

1. Use a TFTP client to put a binary file to the unit (*.ROM to upgrade the unit's internal
operational code and *.COB to upgrade its internal web interface).

Note: TFTP requires the .rom (binary) version of the unit's internal operational code.

2. In the TFTP server field, enter the IP address of the unit being upgraded.

3. Select Upload operation and Binary format.

4. Enter the full path of the firmware file in the Local file name field.

5. In the Remote file name field, enter the current internal operational code or WEB1 to
W

EB6 for the internal web interface.

Micro125 User Guide 63

10: Firmware Upgrades

Figure 10-1. TFTP Window

6. Click the Upload Now button to transfer the file to the unit. The unit performs a power
reset after the firmware has been loaded and stored.

Using TFTP: Command Line Interface

To download new firmware from a computer:

1. Enter the following from a TFTP command line interface:

tftp –i <ip address> put <local filename> <destination file name>

The following examples demonstrate the TFTP command sequence to download the .rom file
and the .cob file:

tftp –i 192.168.1.111 put m125e_6804.rom 5M
tftp –i 192.168.1.111 put m125_webm_1903.cob WEB1

Micro125 User Guide 64

10: Firmware Upgrades

Recovering the Firmware Using the Serial Port and DeviceInstaller

If for some reason the firmware is damaged, you can recover the firmware file by using
DeviceInstaller to download the *.ROM file over the serial port.

To recover firmware:

1. Start DeviceInstaller. If your PC has more than one network adapter, a mess
di

splays. Select an adapter and click OK.

2. From the Tools menu, select Advanced/Recover Firmware. The Serial Port Firmwar

pgrade window displays.

U

3. For Port on PC, enter the COM port on the PC that is connected to the serial port of t

ronix unit.

Lant

Note: Make sure the Micro125 on which you are recovering firmware is connected to this

selected port on your PC.

4. For Device Model, be sure the appropriate Micro125 device is selected.

5. For Firmware File, click the Browse button and go to the location where the firmware file
r

esides.

6. Click OK to download the file.

7. When prompted, reset the device. Status messages and a progress bar at the bottom of
the screen show the progress of the file transfer. When the file transfer completes, t

essage “Successful, Click OK to Close” appears.

m

8. Click the OK button to complete this procedure.

Note: For more information, see Recovering Firmware in the DeviceInstaller online Help.

age

e

he

he

Micro125 User Guide 65

11. Monitor Mode

Monitor Mode is a command-line interface used for diagnostic purposes.
There are two ways to enter Monitor Mode: locally using the serial port or remotely using the

network.

Entering Monitor M ode Using the Serial Port

To enter Monitor Mode locally:

1. Follow the same steps used for setting the serial configuration parameters
(see Serial Port on page 36).

2. Instead of typing three x keys, however:

3. Type zzz (or xx1) to enter Monitor Mode with network connections.

4. Type yyy (or yy1) to enter Monitor Mode without network connections.
A 0> prompt indicates that you have successfully entered Monitor Mode.

Entering Monitor M ode Using the Network Port

To enter Monitor Mode using a Telnet connection:

1. Establish a Telnet session to the configuration port (9999). The following message
appears:

MAC address 00204AAE0412
Software version V6.8.0.4 (121207) M125
AES library version 1.8.2.1

Press Enter for Setup Mode

2. Type M (upper case).
A 0> prompt indicates that you have successfully entered Monitor Mode.

Monitor Mode Commands

The following commands are available in Monitor Mode. Many commands have an IP
address as an optional parameter (xxx.xxx.xxx.xxx). If you enter the IP address, the
command is applied to another unit with that IP address. If you do not enter the IP address,
the command is executed locally.

Note: All commands must be in capital letters. Responses to some of the commands are in

Intel Hex format.

Micro125 User Guide 66

Table 11-1. Monitor Mode Commands

VS x.x.x.x

Version

Queries software header record (16 bytes) of unit with
IP address x.x.x.x.

GC x.x.x.x

Get Configuration

Gets configuration of unit with IP address x.x.x.x as
hex records (120 bytes).

SC x.x.x.x

Send Configuration

Sets configuration of unit with IP address x.x.x.x from
hex records.

PI x.x.x.x

Ping

Pings unit with IP address x.x.x.x to check device
status.

AT

ARP Table

Shows the unit’s ARP table entries.

TT

TCP Connection Table

Shows all incoming and outgoing TCP connections.

NC

and DNS server.

RS

Reset

Resets the unit’s power.

QU

Quit

Exits diagnostics mode.

G0, G1, ....,Ge, Gf

memory page

from the device.

S0, S1,...,Se, Sf

Set configuration to
memory page

Sets a memory page of configuration information on
the device.

GM

Get MAC address

Shows the unit's 6-byte MAC address.

SS

overwritten).

SA

Scan

Initiates a wireless scan if the wireless interface is

and RSSI are returned.

NS

Network Status

Reports the network interfaces’ statuses. Includes

wireless interfaces.

co

Set IP address,

Example:

OK.

Command Command Name Function

Network Connection Shows the unit’s IP address, gateway, subnet mask,

11: Monitor Mode

Get configuration from

Set Security record Sets the Security record without the encryption key

hostbits, gateway ,
and DNS server IP

Gets a memory page of configuration information

and length parameters. The entire record must still be
written, but the encryption-specific bytes do not need
to be provided (they can be null since they are not

enabled. Reports any stations found, including
BSSID, SSID, and RSSI. If SA is followed by a string,
the string is used to filter SSIDs before reporting. If
the BSS does not broadcast its SSID, only the BSSID

potentially negotiated parameters like speed/duplex
for Ethernet or BSSID, encryption, authenticat ion for

co 192.168.0.10 8 192.168.0.1 10001 192.168.1.10
with

192.168.0.10 = IP address of the Micro125
8 = number of hostbits

192.168.0.1 = gateway IP address
10001 = port number of the Micro125

192.168.1.10 = IP address of the DNS Server
The Micro125 stores the setup and performs a reset.

It sends an X before the reset if the command was

Micro125 User Guide 67

11: Monitor Mode

0>

OK; no error

1>

No answer from remote device

2>

Cannot reach remote device or no answer

8>

Wrong parameter(s)

9>

Invalid command

Note: Entering any of the commands listed above generates one of the following command

response codes:

Table 11-2. Command Response Codes

Response Meaning

Micro125 User Guide 68

12. Troubleshooting

When you issue the ARP –S

message displays.

Your currently logged-in user

PC.

Have someone from your IT

When you attempt to assign an

connection fails.

When you Telnet to port 1 on

address.

Telnet back to Port 1. Wait for it
When you Telnet to port 9999,

connection is closed.

You did not press Enter quickly

Telnet to port 9999 again, but

segmented with colons.

The IP address you are trying to

Confirm that your PC has an IP

device server.

This chapter discusses how you can diagnose and fix errors quickly without having to contact
a dealer or Lantronix. It helps to connect a terminal to the serial port while diagnosing an
error to view summary messages that may display. When troubleshooting, always ensure
that the physical connections (power cable, network cable, and serial cable) are secure.

Note: Some unexplained errors might be caused by duplicate IP addresses on the network.

Make sure that your unit's IP address is unique.

When troubleshooting the following problems, make sure that the Micro125 is powered up.
Confirm that you are using a good network connection.

Problems and Error M essages

Problem/Message Reason Solution

command in Windows, the
"ARP entry addition failed: 5"

IP address to the unit by the
ARP method, the "Press Enter
to go into Setup Mode" error
"(described below) message
displays. Now when you Telnet
to the device server, the

the "Press Enter to go into
Setup Mode" message displays.
However, nothing happens
when you press Enter, or your

When you Telnet to port 1 to
assign an IP address to the
device server, the Telnet
window does not respond for a
long time.

does not have the correct rights
to use this command on this

the device server, you are only
assigning a temporary IP
address. When you Telnet into
port 9999 and do not press
Enter quickly, the device server
reboots, causing it to lose the IP

enough. You only have 5
seconds to press Enter before
the connection is closed.

You may have entered the
Ethernet address incorrectly
with the ARP command.

department log you in with
sufficient rights.

to fail, then Telnet to port 9999
again. Make sure you press
Enter quickly.

press Enter as soon as you see
the "Press Enter to go into
Setup Mode" message.

Confirm that the Ethernet
address that you entered with
the ARP command is correct.
The Ethernet address may only
include numbers 0-9 and letters
A-F. In Windows and usually in
Unix, the segments of the
Ethernet address are separated
by dashes. In some forms of
Unix, the Ethernet address is

Micro125 User Guide 69

assign is not on your logical
subnet.

address and that it is in the
same logical subnet that you
are trying to assign to the

Problem/Message Reason Solution

The device server may not be

Make sure that the Link LED is

plugged into the network.

When you try to assign an IP

The cause is most likely one of

subnet mask.

Double-check the parameters

The device server is not

The most likely reason is the

The serial settings for the serial

bit, no flow control.

When you try to enter the setup

response.

The issue is most likely

you have Caps Lock on.

Double-check everything in the

You can ping the device server,

There may be an IP address

Turn the device server off and

disabled.

12: Troubleshooting

with DeviceInstaller, you get the
following :

"No response from device!
Verify the IP, Hardware
Address and Network Class.
Please try again."

communicating with the serial
device to which it is attached.

mode on the device server
using the serial port, you get no

plugged into the network
properly.

the following:

The hardware address you
specified is incorrect.

The IP address you are trying to
assign is not a valid IP for your
logical subnet.

You did not choose the correct

wrong serial settings were
chosen.

something covered in the
previous problem, or possibly,

lit. If the Link LED is not lit, then
the device server is not properly

that you specified.

Note: You cannot assign an IP

address to a device server
through a router.

device and the device server
must match. The default serial
settings for the device server
are RS-232, 9600 baud, 8
character bits, no parity, 1 stop

problem above. Confirm that
Caps Lock is not on.

but not Telnet to the device
server on port 9999.

conflict on your network

You are not Telneting to port

9999.

The Telnet configuration port
(9999) is disabled within the
device server security settings.

then issue the following
commands at the DOS prompt
of your computer:

ARP -D X.X.X.X (X.X.X.X is the
IP of the device server).

PING X.X.X.X (X.X.X.X is the IP
of the device server).
If you get a response, then
there is a duplicate IP address
on the network. If you do not
get a response, use the serial
port to verify that Telnet is not

Micro125 User Guide 70

Problem/Message Reason Solution

The device server appears to

If you are sure that the serial

You can check to see whether

on page 44.

When connecting to the Web-

Your computer is not able to

Make sure that port 30718

the device server.

12: Troubleshooting

be set up correctly, but you are
not communicating with your
device attached to the device
server across the network.

Manager within the device
server, the "No Connection With
The Device Server" message
displays.

port setting is correct, then you
may not be connecting to the
correct socket of the device
server.

Another possibility is that the
device server is not set up
correctly to make a good socket
connection to the network.

connect to port 30718 (77FEh)
on the device server.

there is a socket connection to
or from the device server by
looking at the Status LED.

If the Status LED is blinking
consistently, then there is a
good socket connection.

If the Status LED is solid green,
then the socket connection
does not exist. Use the
Connect Mode option C0 for
making a connection to the
device server from the network.
Use Connect Mode option C1
or C5 for a connection to the
network from the device server.
See the full list of Connect
Mode options in Connect Mode

(77FEh) is not blocked with any
router that you are using on the
network. Also, make sure that
port 77FEh is not disabled
within the Security settings of

Micro125 User Guide 71

Technical Support

If you are experiencing an error that is not described in this chapter, or if you are unable to fix
the error, you have the following options:

Technical Support US

Check our online knowledge base or send a question to Technical Support at

http://www.lantronix.com/support

Phone: [phone] (US Only)

[phone]

Technical Support Europe, Middle East, and Africa

Phone: [phone]

[phone] (Germany Only)

12: Troubleshooting

.

Email:
Firmware downloads, FAQs, and the most up-to-date documentation are available at

www.lantronix.com/support

When you report a problem, please provide the following information:

 Your name, and your company name, address, and phone number 
 Lantronix model number
 Lantronix MAC number
 Software versio n (on the fir s t scr een sho wn when you Telnet to port 9999)
 Description of the problem
 Status of the unit when the problem occurred (please try to include information on user

[e-mail] or [e-mail]

.

and network activity at the time of the problem).

Micro125 User Guide 72

1

0001

1 2 0010

2

3

0011

3

4

0100

4 5 0101

5

6

0110

6

7

0111

7 8 1000

8

9

1001

9

10

1010

A

11

1011

B

12

1100

C

13

1101

D

14

1110

E

15

1111

F

A: Binary to Hexadecimal Conversions

Many of the unit’s configuration procedures require assembling a series of options
(represented as bits) into a complete command (represented as a byte). Convert the resulting
binary value to a hexadecimal representation.

Converting Binary to Hexadecimal

Following are two simple ways to convert binary numbers to hexadecimals.

Conversion Table

Hexadecimal digits have values ranging from 0 to F, which are represented as 0-9, A (for 10),
B (for 11), etc. To convert a binary value (for example, 0100 1100) to a hexadecimal
representation, the upper and lower four bits are treated separately, resulting in a two-digit
hexadecimal number (in this case, 4C). Use the following table to convert values from binary
to hexadecimal.

Decimal Binary Hex

0

0000 0

Micro125 User Guide 73

A: Binary to Hexadecimal Conversions

Scientific Calculator

Another simple way to convert binary to hexadecimals is to use a scientific calculator, such
as the one available on Windows’ operating systems. For example:

1. On the Windows’ Start menu, click ProgramsAccessoriesCalculator.

2. On the View menu, select Scientific. The scientific calculator displays.

3. Select Bin (Binary), and type the number to convert.

4. Click Hex. The hexadecimal value displays.

Micro125 User Guide 74