GE B90 UR Series Instruction Manual page 7

A. FLEXANALOG AND
FLEXINTEGER
PARAMETERS
B. MODBUS
COMMUNICATIONS
C. IEC 61850
COMMUNICATIONS
GE Multilin
TABLE OF CONTENTS
10.1.2 SAMPLE BUSBAR AND DATA........................................................................ 10-1
10.2 ZONING AND DYNAMIC BUS REPLICA
10.2.1 NORTH BUS ZONE ......................................................................................... 10-3
10.2.2 SOUTH BUS ZONE ......................................................................................... 10-3
10.3 BIASED CHARACTERISTIC BREAKPOINTS
10.3.1 DESCRIPTION................................................................................................. 10-4
10.3.2 HIGH BREAKPOINT ........................................................................................ 10-4
10.3.3 LOW BREAKPOINT......................................................................................... 10-5
10.4 SLOPES AND HIGH SET THRESHOLD
10.4.1 DESCRIPTION................................................................................................. 10-6
10.4.2 EXTERNAL FAULTS ON C-1 .......................................................................... 10-6
10.4.3 EXTERNAL FAULTS ON C-2 .......................................................................... 10-7
10.4.4 EXTERNAL FAULTS ON C-3 .......................................................................... 10-7
10.4.5 EXTERNAL FAULTS ON C-4 .......................................................................... 10-8
10.4.6 EXTERNAL FAULTS ON C-5 .......................................................................... 10-8
10.5 BUS DIFFERENTIAL SETTINGS
10.5.1 DESCRIPTION................................................................................................. 10-9
10.6 ENHANCING RELAY PERFORMANCE
10.6.1 USING SETTING GROUPS........................................................................... 10-10
A.1 PARAMETER LISTS
A.1.1 FLEXANALOG ITEMS .......................................................................................A-1
A.1.2 FLEXINTEGER ITEMS ......................................................................................A-3
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 MODBUS FUNCTION CODES
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 FILE TRANSFERS
B.3.1 OBTAINING RELAY FILES VIA MODBUS ........................................................B-6
B.3.2 MODBUS PASSWORD OPERATION ...............................................................B-7
B.4 MEMORY MAPPING
B.4.1 MODBUS MEMORY MAP .................................................................................B-8
B.4.2 DATA FORMATS .............................................................................................B-56
C.1 OVERVIEW
C.1.1 INTRODUCTION................................................................................................C-1
C.1.2 COMMUNICATION PROFILES .........................................................................C-1
C.2 SERVER DATA ORGANIZATION
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 GGIO3: DIGITAL STATUS AND ANALOG VALUES FROM RECEIVED GOOSE
DATAC-2
C.2.5 GGIO4: GENERIC ANALOG MEASURED VALUES .........................................C-2
C.2.6 MMXN: ANALOG MEASURED VALUES...........................................................C-3
B90 Low Impedance Bus Differential System vii