Master Terminal Unit (MTU)

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Abbreviation(s) and Synonym(s):

Definition(s):

A controller that also acts as a server that hosts the control software that communicates with lower-level control devices, such as Remote Terminal Units (RTUs) and Programmable Logic Controllers (PLCs), over an ICS network. In a SCADA system, this is often called a SCADA server, MTU, or supervisory controller.
Source(s):
NIST SP 800-82 Rev. 2 under Control Server

See Control Server.
Source(s):
NIST SP 800-82 Rev. 2

Glossary Comments

Comments about specific definitions should be sent to the authors of the linked Source publication. For NIST publications, an email is usually found within the document.

Comments about the glossary's presentation and functionality should be sent to secglossary@nist.gov.

See NISTIR 7298 Rev. 3 for additional details.

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Master Terminal Unit (MTU)

Glossary Comments