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Power Management Control System
Table of Contents
i
Preface
Welcome to PMCS!.............................................................................................................................................1
What is Power Management?............................................................................................................................1
Benefits of Power Management.........................................................................................................................1
What is PMCS? ...................................................................................................................................................1
How Does PMCS Work? .....................................................................................................................................2
Using This Guide .................................................................................................................................................2
Chapter 1 – Introduction ................................................................................. 3
1–1 Typical Systems ...........................................................................................................................................3
1–2 Master-Slave Organization .........................................................................................................................4
1–3 Required Hardware......................................................................................................................................5
Host Computer......................................................................................................................................5
RS-485 Interface Card or RS-232/RS-485 Converter..........................................................................5
Ethernet Network Card ........................................................................................................................5
1–4 Compatibility & Interconnection with Existing Ethernet Networks...........................................................5
1–5 Operation During Power Outage .................................................................................................................5
1–6 Time & Date Stamping ................................................................................................................................6
1–7 Remote System Operation...........................................................................................................................6
1–8 Supported IEDs ............................................................................................................................................7
Chapter 2 – Network Design........................................................................... 9
2–1 Modbus Rules ............................................................................................................................................10
2–2 Ethernet Configuration Rules ....................................................................................................................11
Table 3. Ethernet configuration rules2–3 Ethernet Network Considerations ................................................12
10Base-T specifications and rules ....................................................................................................13
10Base-FL specifications and rules...................................................................................................13
2–4 Commnet Configuration Rules...................................................................................................................14
2–5 Modbus Wiring Rules – Diagrams............................................................................................................15
2–6 Commnet Wiring Rules – Diagrams..........................................................................................................19
2–7 Performance Recommendations ...............................................................................................................21
The Ideal Network..............................................................................................................................21
Modbus performance recommendations ..........................................................................................21
Commnet performance recommendations ........................................................................................21
2–8 Addressing the IEDs...................................................................................................................................21
2–9 Multiple RS-485 Networks – Addressing.................................................................................................25
2–10 System Expansion....................................................................................................................................25
2–11 Case Studies ............................................................................................................................................25
Case Study One ..................................................................................................................................25
Case Two ............................................................................................................................................27
