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PARAMETERS
B. MODBUS
GE Multilin
TABLE OF CONTENTS
8.1.3
RANDOMNESS ALGORITHM ........................................................................... 8-2
8.1.4
EXPERT ARC DETECTOR ALGORITHM ......................................................... 8-2
8.1.5
SPECTRAL ANALYSIS ALGORITHM ............................................................... 8-2
8.1.6
LOAD EVENT DETECTOR ALGORITHM ......................................................... 8-2
8.1.7
LOAD ANALYSIS ALGORITHM ........................................................................ 8-3
8.1.8
LOAD EXTRACTION ALGORITHM................................................................... 8-3
8.1.9
ARC BURST PATTERN ANALYSIS ALGORITHM............................................ 8-3
8.1.10
ARCING SUSPECTED ALGORITHM................................................................ 8-3
8.1.11
OVERCURRENT DISTURBANCE MONITORING ............................................ 8-3
8.1.12
HI-Z EVEN HARMONIC RESTRAINT ALGORITHM ......................................... 8-3
8.1.13
HI-Z VOLTAGE SUPERVISION ALGORITHM .................................................. 8-4
8.2.1
FAULT TYPE DETERMINATION....................................................................... 8-5
9.1.1
TESTING UNDERFREQUENCY AND OVERFREQUENCY ELEMENTS......... 9-1
A.1.1
FLEXANALOG LIST...........................................................................................A-1
B.1 MODBUS RTU PROTOCOL
B.1.1
INTRODUCTION................................................................................................B-1
B.1.2
PHYSICAL LAYER.............................................................................................B-1
B.1.3
DATA LINK LAYER............................................................................................B-1
B.1.4
CRC-16 ALGORITHM........................................................................................B-2
B.2.1
SUPPORTED FUNCTION CODES ...................................................................B-3
B.2.2
READ ACTUAL VALUES OR SETTINGS (FUNCTION CODE 03/04H) ...........B-3
B.2.3
EXECUTE OPERATION (FUNCTION CODE 05H) ...........................................B-4
B.2.4
STORE SINGLE SETTING (FUNCTION CODE 06H) .......................................B-4
B.2.5
STORE MULTIPLE SETTINGS (FUNCTION CODE 10H) ................................B-5
B.2.6
EXCEPTION RESPONSES ...............................................................................B-5
B.3.1
OBTAINING RELAY FILES VIA MODBUS ........................................................B-6
B.3.2
MODBUS PASSWORD OPERATION ...............................................................B-8
B.4.1
MODBUS MEMORY MAP .................................................................................B-9
B.4.2
DATA FORMATS .............................................................................................B-60
C.1.1
INTRODUCTION................................................................................................C-1
C.1.2
COMMUNICATION PROFILES .........................................................................C-1
C.2.1
OVERVIEW........................................................................................................C-2
C.2.2
GGIO1: DIGITAL STATUS VALUES .................................................................C-2
C.2.3
GGIO2: DIGITAL CONTROL VALUES ..............................................................C-2
C.2.4
C.2.5
GGIO4: GENERIC ANALOG MEASURED VALUES .........................................C-2
C.2.6
MMXU: ANALOG MEASURED VALUES...........................................................C-3
C.2.7
PROTECTION AND OTHER LOGICAL NODES ...............................................C-3
C.3.1
BUFFERED/UNBUFFERED REPORTING ........................................................C-5
F60 Feeder Protection System
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