Ethernet to I2C Bus Host Adapter 
with ASCII Fast Mode Interface
iPort/LAN 2
iPort/LAN 2TM 

Tired of traveling to remote sites to monitor systems or fix problems? Then...

Get off the plane, get on the bus, with iPort/LAN 2TM 

iPort/LAN 2 brings Local (LAN) or Remote (INTERNET) I2C directly to your desk. Just load our free software, plug the iPort/LAN 2 into your network, and you will be communicating with I2C Bus devices in your office, lab, factory, or remote sites in seconds.

With the iPort/LAN 2 you can commuicate with I2C Bus systems at direct, local, or remote sites, monitor sensors, control devices, even reprogram EEPROMs. All from your desk. If you think that sounds fantastic, we agree.

Which I2C Adapter is right for me.

  • Access Direct, Local (LAN), or Remote (INTERNET) connect I2C devices to your Desktop PC.
  • Supports Operating Systems:
    • Windows XP, Vista, 7, 8, 8.1, and 10.
  • High Performance Processor Increases Throughput
  • Circuit Sense, Low Voltage Sensing Circuit
  • I2C Bus Mini Interface
  • Ethernet Network Interface (IEEE 802.3, 10/100Base-T, 10/100 Mbps Auto-Sensing, RJ-45).
  • Built-in ESD, Over-voltage, and Reverse-voltage Protection.
  • Switch Controlled Properties:
    • I2C Bus Mode Switch, +5V Power Source, or Voltage Sense (0.5v to 5v)
    • I2C Bus Pull-Up Switch, 1.8K ohm, Enable or Disable
  • Software Controlled Properties:
    • I2C Bus Master Clock Rates:
      • 23KHz
      • 86KHz
      • 100KHz (Standard Mode)
      • 400KHz (Fast Mode)
    • I2C Bus General Call Enable
    • I2C Bus Time-Out (0-32K ms)
    • I2C Bus Interrupt Signal Control (Assert, Release, Monitor)
    • Host Commuication Flow Control (XON/XOFF or RTS/CTS)
    • User Interface Echo/Prompt Enable
    • User Data Format (HEX or ASCII/HEX)
    • Serial Port Baud Rates (19,200, 57,600, and 115,200)
  • Supported I2C Bus Activities:
    • Master and Slave Functions
    • Transmit, Receive, and TxRx Data Functions
    • Multi-Master Arbitration Loss Detection
    • Clock-stretch Detection
    • Bus Time-Out Detection
    • Interrupt Signal Generation and Detection
    • 7-bit Slave Address Generation and Detection
    • Up to 32K data bytes in a single message
    • SMBus Packet Error Detection
    • eXtended Commands for 2-Wire, "I2C-Like" Low-level SCL/SDA Signal Control
  • Software Support:
  • Software Development Tools:
    • Develop Custom VB/C#/C++/LabVIEW Apps with our Microsoft .NET Class Library
    • Develop Custom LabVIEW Apps with our LabVIEW VI Library
    • Develop Custom Apps with our Direct Access ASCII Text Command Interface
  • Compatible with existing MCC ASCII-text based I2C Bus adapter applications.
  • US-FCC and EUR-CE EMC Certification
  • RoHS/Lead-Free Compliant

Download (PDF)
The iPort/LAN 2 is our most extensible I2C Bus host adapter. Capable of accessing I2C Bus devices directly, over a Local Area Network, or over the Internet, the iPort/LAN 2 will operate with any Windows PC. Typical applications include monitoring remote sites, update delivery, remote EEPROM programming, device control and sensor networking.

Click for larger view.
Three ways to connect (direct, local, and remote)

Over the past few years, the I2C Bus has expanded from simple control to data intensive applications. As new uses arise, remote access and bus bandwidth have become key issues in product design and testing. The iPort/LAN 2, our fourth generation adapter for the I2C Bus, addresses these issues by supporting several I2C bus speeds, including fast mode (400kbit/s), and local or remote network access. Implemented using a high-performance bus co-processor with optimized instruction set, the adapter also includes large message buffers (256 bytes) to reduce host computer and bus overhead. In addition to operating as a bus master or slave in a multi-master system, a built-in bi-directional /INT signal line allows the device to receive or generate "slave only" device notifications.

Thanks to it's Virtual Communications Port (VCP) driver, the iPort/LAN 2 will work with ComPort based applications written for all our ASCII-text interface based USB and RS-232 to I2C host adapters.

Master and Slave, Transmit and Receive, iPort/LAN 2 supports I2C message modes including Multi-Master, Arbitration Loss Detection, with messages from 1 to 32K bytes in length.

Start sending I2C messages in minutes using our Message Manager or Message Center applications included with the iPort Utility Pack. You can also use your computer's terminal emulation software, or create your own custom I2C applications using any programming tool that can access your computer's (virtual) serial port.

iPort/LAN 2
ASCII Text Interface Commands
Command Description
Note: [CR] = Carriage Return Code or Enter Key.
Syntax: [Select], (Optional), xx = [00..FE], n = [1..32767]
Ctrl/R,Ctrl/R,Ctrl/R iPort/LAN 2 Reset
This command resets the iPort/LAN 2 to its default state.
//[CR] Status Display
Display iPort/LAN 2 status information. 
/B[0|1|2][CR] Virtual Com Port Baud Rate Control
Set the Virtual Com Port Baud Rate (0=19.2, 1=57.6, 2=115.2k)
/C[CR] Close I2C Connection
Disconnect from the I2C Bus.
/Dxx[CR] Set Destination I2C Slave Address
Set the destination I2C Slave Address for subsequent Master Transmit or Receive operations.
/E[0|1][CR] Echo/Prompt Control [0 = Disable, 1 = Enable]
Enable/Disable data entry echo and prompts.
/F[0|1][CR] Virtual Com Port Flow Control [0 = XON/XOFF, 1 = RTS/CTS]
Select serial communication handshaking protocol.
/G[0|1][CR] I2C General Call Control [0 = Disabled, 1 = Enabled]
Enables/Disables iPort/LAN 2 response to I2C Bus General Call (00) messages.
/H[0|1][CR] Hex Only Display Control [0 = Disabled, 1 = Enabled]
Controls display format of received message data.
/Ixx[CR] Set iPort/LANís Own I2C Slave Address
Sets iPort/LAN's own I2C Slave Address. iPort/LAN 2 will respond to I2C Bus messages sent to this address.
/K[0|1|2|3][CR] I2C Bus Clock Rate Control
Set I2C Bus Clock Rate Control  (0=23, 1=86, 2=100, 3=400 KHz)
/M[CR] Command Menu Display
Display iPort/LAN's Command Menu
/N[0|1|A|R][CR] iNterrupt Signal Monitor/Control Status
Sets Monitor/Control/Status /INT Line. [0=Disable, 1=Enable, A=Assert, R=Release, [CR] = Status]
/O[CR] Open I2C Connection
Activates iPort/LAN 2 as an I2C device attached to the bus.
/*Rn[CR] Master Read Message
Read the specified number of data bytes from the current Destination I2C Slave device. * = No Stop for Repeated Start
/Stext[CR] Slave Transmit Message
Write the specified data bytes to a requesting I2C Master Receiver device.
/*Ttext[CR] Master Transmit Message
Master Transmit the specified data bytes to the current Destination I2C Slave device. * = No Stop for Repeated Start 
/Un[CR] I2C Bus Time-oUt
Set the I2C Bus Time-oUt in msec (0=Disable)
/V[CR] Display iPort/LAN 2 Firmware Version
(Major XX.XX Minor)
/X[CR] eXtended Commands
Direct control of I2C Clock (SCL) and Data (SDA) lines. See User's Guide for details.
/*Y[CR] Display Tx bYte Count
Display number of data bytes last sent to slave device. *= Also display last received Ack bit from slave device.


Included Parts List:
  • iPort/LAN 2 I2C Bus Host Adapter
  • I2C Bus Mini Clip Lead Cable (5-wire, 1ft.)
  • Ethernet Interface Cable (3 Ft., Standard)
  • Global Power Supply (100-240V, 50-60Hz)
  • Quick Start Quide
  • iPort I2C Utility Pack for Windows (Download)
  • iPort/LAN 2 User's Guide (Download )
iPort/LAN 2
Optional Add-On Parts Environmental Specifications
Declaration of Conformity
Ordering Information
I2C is just a mouse click away TM