viii L30 Line Current Differential System GE MultilinTABLE OF CONTENTS10.1.2 CLOCK SYNCHRONIZATION TESTS .............................................................10-210.1.3 CURRENT DIFFERENTIAL..............................................................................10-310.1.4 LOCAL-REMOTE RELAY TESTS ....................................................................10-411. MAINTENANCE 11.1 MODULES11.1.1 REPLACE A MODULE .....................................................................................11-111.2 BATTERIES11.2.1 REPLACE BATTERY .......................................................................................11-311.2.2 DISPOSE OF BATTERY ..................................................................................11-411.3 UNINSTALL AND CLEAR FILES AND DATA11.3.1 UNINSTALL AND CLEAR FILES AND DATA ..................................................11-711.4 REPAIRS11.4.1 REPAIRS ..........................................................................................................11-811.5 STORAGE11.5.1 STORAGE ........................................................................................................11-911.6 DISPOSAL11.6.1 DISPOSAL ......................................................................................................11-10A. FLEXANALOG ANDFLEXINTEGERPARAMETERSA.1 PARAMETER LISTSA.1.1 FLEXANALOG ITEMS....................................................................................... A-1A.1.2 FLEXINTEGER ITEMS ...................................................................................... A-9B. MODBUSCOMMUNICATIONSB.1 MODBUS RTU PROTOCOLB.1.1 INTRODUCTION ............................................................................................... B-1B.1.2 PHYSICAL LAYER ............................................................................................ B-1B.1.3 DATA LINK LAYER ........................................................................................... B-1B.1.4 MODBUS RTU CRC-16 ALGORITHM .............................................................. B-2B.2 MODBUS FUNCTION CODESB.2.1 SUPPORTED FUNCTION CODES ................................................................... B-4B.2.2 READ ACTUAL VALUES OR SETTINGS (FUNCTION CODE 03/04H) ........... B-4B.2.3 EXECUTE OPERATION (FUNCTION CODE 05H)........................................... B-5B.2.4 STORE SINGLE SETTING (FUNCTION CODE 06H)....................................... B-5B.2.5 STORE MULTIPLE SETTINGS (FUNCTION CODE 10H) ................................ B-6B.2.6 EXCEPTION RESPONSES............................................................................... B-6B.3 FILE TRANSFERSB.3.1 OBTAINING RELAY FILES VIA MODBUS........................................................ B-7B.4 MEMORY MAPPINGB.4.1 MODBUS MEMORY MAP ................................................................................. B-9B.4.2 DATA FORMATS............................................................................................. B-69C. IEC 61850COMMUNICATIONSC.1 OVERVIEWC.1.1 INTRODUCTION ............................................................................................... C-1C.1.2 COMMUNICATION PROFILES ......................................................................... C-1C.1.3 FILE TRANSFER BY IEC 61850 ....................................................................... C-2C.2 SERVER DATA ORGANIZATIONC.2.1 OVERVIEW ....................................................................................................... C-3C.2.2 GGIO1: DIGITAL STATUS VALUES ................................................................. C-3C.2.3 GGIO2: DIGITAL CONTROL VALUES.............................................................. C-3C.2.4 GGIO3: DIGITAL STATUS AND ANALOG VALUES FROM GOOSE DATA .... C-3C.2.5 GGIO4: GENERIC ANALOG MEASURED VALUES......................................... C-3C.2.6 MMXU: ANALOG MEASURED VALUES .......................................................... C-4
