All HART Manufacturer ID and Device Type codes are assigned by FieldComm Group.


NOTE – Manufacturer IDs and Device Type Codes require active IP licenses with FieldComm Group. This is typically obtained through Membership (most cost effective method), but may be purchased outright for 90% of the cost of membership dues. You can learn more by visiting www.fieldcommgroup.org/membership/membership



Here are the steps to obtain a device type code (also called Expanded Device Type):

  • Obtain a manufacturer ID or request at the same time as the device type code(s).
  • Create a device model string name (Note: 18 characters or less is recommended for HART)

  • Please open a support ticket and specify the following:

    • I need assistance with:  Membership Support
    • Details: Manufacturer ID/Device Type Request
    • Additional Details: select the applicable technology/protocol 
    • Subject: New Device Type Code
    • Description: State the name to register for a new device type code. Include your manufacturer ID code, if known. Multiple codes can be requested at once.
  • Receive a confirmation message from FieldComm Group.
  • Use the string and ID number exactly as specified in the Device Support Files and registration submission documentation.


How to update the model name of a registered HART product:

Manufacturers may update the name of their device at any time before or after completing the registration. If a manufacturer desires to update the product name after completing the registration process, FieldComm Group will:

  • Issue an updated Registration Certificate
  • Issue an updated Conformance Report
  • Update the Product in the Product Catalog
  • Update the Product Name in the Common Tables Specification 

A Product Name Update Fee ($480) applies per Registered Product name change.

If you would like to update a Product Name, please open a support ticket and specify the following:

  • I need assistance with:  Membership Support
  • Details: Manufacturer ID/Device Type Request
  • Additional Details: select the applicable technology/protocol 
  • Subject: Update Model Name
  • Description: Include the previous name and the new name and the device type code.

We recommend that the Device Description files be updated and submitted with the new model name. Please see the EDD Registration articles for more information about EDD Registration. The Product Name Update Fee does not include EDD test or registration costs, these are separate fees.


Character Limit for Product Names:

The Long Tag is limited to 32 ISO Latin 1 characters for HART products. 

The ModelName is limited to 32 ISO Latin 1 characters for FOUNDATION Fieldbus products.


It is recommended to use 18 characters or less for best visibility on displays. 




Also see:

Manufacturer ID Codes

EDD Registration

Testing and Registration Fees