1 CHAPTER OVERVIEW
This product supports Substation Automation System (SAS), and Supervisory Control and Data Acquisition (SCADA)
communication. The support embraces the evolution of communications technologies that have taken place since
microprocessor technologies were introduced into protection, control, and monitoring devices which are now
ubiquitously known as Intelligent Electronic Devices for the substation (IEDs).
As standard, all products support rugged serial communications for SCADA and SAS applications. By option, any
product can support Ethernet communications for more advanced SCADA and SAS applications.
This chapter contains the following sections:
Chapter Overview 531
Communication Interfaces 532
Serial Communication 533
Standard Ethernet Communication 536
Redundant Ethernet Communication 537
Simple Network Management Protocol (SNMP) 560
Data Protocols 567
Read Only Mode 596
Time Synchronisation 598
P543i/P545i Chapter 22 - Communications
P54x1i-TM-EN-1 531
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