Master Terminal Unit
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SCADA Server or Master Terminal Unit (MTU).
The SCADA Server is the device that acts as the
master in a SCADA system. Remote terminal units
and PLC devices (as described below) located at
remote field sites usually act as slaves.
Contents
Definitions
Other International Definitions
International Society of Automation (ISA)
In a control system, refers to control achieved by intelligence that is distributed about the process to be controlled, rather than by a centrally located single unit. [1].
Standard Definition
NIST
The SCADA Server is the device that acts as the master in a SCADA system. Remote terminal units and PLC devices (as described below) located at remote field sites usually act as slaves. [2].
