November 2005
News Release

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Modbus Conformance Test Laboratory Opens in China

ITEI Lab Tests Modbus TCP/IP and Modbus Serial Line Devices

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North Grafton, Mass.- Modbus-IDA and the Instrumentation Technology & Economy Institute (ITEI) announce the opening of ITEI’s Modbus Conformance Test Laboratory in Beijing. As part of its expanding Conformance Test Program, Modbus-IDA is contracting with organizations in locations around the world to offer conformance testing and certification of Modbus devices.

Planning for the ITEI lab started in January 2005. With the help of Schneider Electric engineers, the lab is open today and available to test and certify devices as conforming to Modbus TCP/IP specification or Modbus over Serial Line. Conformance and interoperability tests are performed with equipment donated by Schneider Electric.

Tested devices will be listed on the Modbus-IDA website (, which features a growing database of Modbus devices for users to search and identify the right Modbus devices for their applications.

According to Ken Crater, president of Modbus-IDA, “The launch of this new laboratory is a marker of the ubiquity of Modbus around the world and its importance in the growing Chinese manufacturing market. Modbus-IDA is delighted to be working with the ITEI to make conformance testing easily available for device suppliers in Asia.”

Mr. Ouyang Jinsong, Director of Standardization, ITEI, and General Secretary of the National Standardization Technical Committee on Industrial Process Measurement and Control will introduce the laboratory and its capabilities this week during a four-city tour of China sponsored by ITEI and Modbus-IDA.

About Modbus-IDA

Modbus-IDA is headquartered in North Grafton, Massachusetts, USA. The organization is a group of independent users and suppliers of automation devices that seeks to drive the adoption of the Modbus communication protocol suite and the evolution to address architectures for distributed automation systems across multiple market segments. Additional information about Modbus-IDA may be found on the organization’s website at


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