GE t60 Instruction Manual page 9

8. SECURITY
9. COMMISSIONING
A. FLEXANALOG AND
FLEXINTEGER
PARAMETERS
B. MODBUS
COMMUNICATIONS
GE Multilin
TABLE OF CONTENTS
8.1 PASSWORD SECURITY
8.1.1 OVERVIEW........................................................................................................ 8-1
8.1.2 PASSWORD SECURITY MENU ....................................................................... 8-2
8.1.3 LOCAL PASSWORDS ....................................................................................... 8-2
8.1.4 REMOTE PASSWORDS ................................................................................... 8-3
8.1.5 ACCESS SUPERVISION ................................................................................... 8-3
8.1.6 DUAL PERMISSION SECURITY ACCESS ....................................................... 8-4
8.2 SETTINGS SECURITY
8.2.1 SETTINGS TEMPLATES ................................................................................... 8-6
8.2.2 SECURING AND LOCKING FLEXLOGIC™ EQUATIONS ............................. 8-10
8.2.3 SETTINGS FILE TRACEABILITY .................................................................... 8-12
8.3 ENERVISTA SECURITY MANAGEMENT SYSTEM
8.3.1 OVERVIEW...................................................................................................... 8-15
8.3.2 ENABLING THE SECURITY MANAGEMENT SYSTEM ................................. 8-15
8.3.3 ADDING A NEW USER ................................................................................... 8-15
8.3.4 MODIFYING USER PRIVILEGES ................................................................... 8-16
9.1 DIFFERENTIAL CHARACTERISTIC TEST
9.1.1 DESCRIPTION................................................................................................... 9-1
9.2 DIFFERENTIAL CHARACTERISTIC TEST EXAMPLES
9.2.1 INTRODUCTION................................................................................................ 9-3
9.2.2 TEST EXAMPLE 1 ............................................................................................. 9-4
9.2.3 TEST EXAMPLE 2 ............................................................................................. 9-9
9.2.4 TEST EXAMPLE 3 ........................................................................................... 9-10
9.2.5 TEST EXAMPLE 4 ........................................................................................... 9-11
9.3 INRUSH INHIBIT TEST
9.3.1 INRUSH INHIBIT TEST PROCEDURE ........................................................... 9-12
9.4 OVEREXCITATION INHIBIT TEST
9.4.1 OVEREXCITATION INHIBIT TEST PROCEDURE ......................................... 9-13
9.5 FREQUENCY ELEMENT TESTS
9.5.1 TESTING UNDERFREQENCY AND OVERFREQUENCY ELEMENTS ......... 9-14
9.6 COMMISSIONING TEST TABLES
9.6.1 DIFFERENTIAL RESTRAINT TESTS.............................................................. 9-16
9.6.2 INRUSH INHIBIT TESTS ................................................................................. 9-16
9.6.3 OVEREXCITATION INHIBIT TESTS ............................................................... 9-17
A.1 PARAMETER LISTS
A.1.1 FLEXANALOG ITEMS .......................................................................................A-1
A.1.2 FLEXINTEGER ITEMS ....................................................................................A-23
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
T60 Transformer Protection System ix