GE L90 Instruction Manual page 10

B. MODBUS
COMMUNICATIONS
C. IEC 60870-5-104
COMMUNICATIONS
D. DNP COMMUNICATIONS
E. MISCELLANEOUS
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TABLE OF CONTENTS
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 UR 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-49
C.1 IEC 60870-5-104
C.1.1 INTEROPERABILITY DOCUMENT................................................................... C-1
C.1.2 POINT LIST ..................................................................................................... C-10
D.1 DNP PROTOCOL
D.1.1 DEVICE PROFILE DOCUMENT ....................................................................... D-1
D.1.2 IMPLEMENTATION TABLE .............................................................................. D-4
D.2 DNP POINT LISTS
D.2.1 BINARY INPUTS ............................................................................................... D-8
D.2.2 BINARY AND CONTROL RELAY OUTPUTS ................................................. D-14
D.2.3 COUNTERS..................................................................................................... D-15
D.2.4 ANALOG INPUTS............................................................................................ D-16
E.1 CHANGE NOTES
E.1.1 REVISION HISTORY......................................................................................... E-1
E.1.2 CHANGES TO THE L90 MANUAL .................................................................... E-2
E.2 ABBREVIATIONS
E.2.1 STANDARD ABBREVIATIONS ......................................................................... E-4
E.3 WARRANTY
E.3.1 GE MULTILIN WARRANTY............................................................................... E-6
L90 Line Differential Relay GE Multilin