2103 Modem Module Section 5 Modbus Protocol

5.5 Common Acronyms

SCADA systems can be relatively simple, such as one that monitors the environmental conditions of a small office building, or very complex, such as a system that monitors all the activity in a nuclear power plant or a municipal water system.

ASCII – American Standard Code for Information Interchange DCS – Distributed Control Systems

MTU – Master Terminal Unit

OPC – Object Linking and Embedding (OLE) for Process Control PLC – Programmable Logic Controller

RTU – Remote Terminal Unit

SCADA – Supervisory Control And Data Acquisition TCP/IP – Transmission Control Protocol/Internet Protocol

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