Table of Contents
1 GENERAL INFORMATION ................................................................................................................... 1
1.1 INTRODUCTION.................................................................................................................................. 1
1.2 OVERVIEW OF EMCP 4 SCADA DATA LINKS ..................................................................................... 1
1.3 REFERENCES .................................................................................................................................... 2
1.4 GLOSSARY OF TERMS ....................................................................................................................... 3
2 RS-485 SCADA DATA LINK – WIRING AND CONFIGURATION....................................................... 5
2.1 NETWORK TOPOLOGY ....................................................................................................................... 5
2.2 WIRING ............................................................................................................................................ 6
Shielding ................................................................................................................................................ 7
Termination ............................................................................................................................................ 7
Extending Range ................................................................................................................................... 7
2.3 SOFTWARE CONFIGURATION ............................................................................................................. 7
Baud Rate .............................................................................................................................................. 8
Parity ...................................................................................................................................................... 8
Slave Address ........................................................................................................................................ 8
Stop Bits ................................................................................................................................................. 8
Bias Resistors ........................................................................................................................................ 9
2.4 ERROR CHECKING ............................................................................................................................ 9
3 TCP/IP SCADA DATA LINK – WIRING AND CONFIGURATION ..................................................... 10
3.1 NETWORK TOPOLOGY ..................................................................................................................... 10
3.2 WIRING (INCLUDING SWITCHES, ROUTERS, ETC) ................................................................................ 10
Crossover Cables ................................................................................................................................ 10
3.3 SOFTWARE CONFIGURATION ........................................................................................................... 11
IP Address ........................................................................................................................................... 11
Network Mask ...................................................................................................................................... 11
Default Gateway .................................................................................................................................. 11
3.4 ERROR CHECKING .......................................................................................................................... 11
4 EMCP 4 SCADA COMMUNICATION ................................................................................................. 12
4.1 ADDRESSING .................................................................................................................................. 12
4.2 SUPPORTED FUNCTION CODES......................................................................................................... 12
4.3 DATA INTERPRETATION ................................................................................................................... 14
Numerical data ..................................................................................................................................... 15
State-based data .................................................................................................................................. 15
Complex data ....................................................................................................................................... 15
4.4 SECURITY ....................................................................................................................................... 15
5 EMCP 4 SCADA DATA POINTS ........................................................................................................ 18
5.1 GENERATOR AC MONITORING ......................................................................................................... 18
5.2 GENERATOR POWER MONITORING................................................................................................... 19
5.3 GENERATOR OTHER MONITORING ................................................................................................... 20
5.4 BUS AC MONITORING ..................................................................................................................... 20
5.5 GENERATOR SET STATE MONITORING AND CONTROL ......................................................................... 20
5.6 ENGINE MONITORING ....................................................................................................................... 23
5.7 EVENT MONITORING ........................................................................................................................ 27
5.8 TIMERS, COUNTERS, TOTALS, AND ENERGY ..................................................................................... 30
5.9 PROGRAMMABLE CYCLE TIMERS ..................................................................................................... 31
5.10 SYSTEM INFORMATION ................................................................................................................. 31
5.11 EMCP 4 GSC INPUTS AND OUTPUTS ........................................................................................... 32
5.12 LOAD SHED COMMAND (EMCP 4.3 AND 4.4) ................................................................................ 34
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