2103 Modem Module Section 4 Modbus Protocol
4.5 Common Acronyms
SCADA systems can be relatively simple, such as one that mon- itors 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
