GE 845 Instruction Manual page 163

Transformer protection system
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CHAPTER 4: SETPOINTS
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
Description
Password Characters 11 and 12
Password Characters 13 and 14
Password Characters 15 and 16
Password Characters 17 and 18
Password Characters 19 and 20
Password Characters 21 and 22
Table 4-8: Login as Administrator Function Format
Slave# Function Data
Number
Starting
of
Address
Setpoints
FE
10
F322
0016
Table 4-9: Login as Administrator Function Format continued
Data 10 Data 11 Data 12 Data 13 Data 14 Data 15 Data 16 Data17 Data 18 Data 19 Data 20 Data 21 Data 22
0
0
3000
0
Commands using Modbus Function 10H (Store Multiple Setpoints)
Sending commands requires writing 4 bytes to the Command address register using the
Modbus Function 10H (Store Multiple Setpoints). The 4 bytes are the function and the
command values. The function value is always 05.
Table 4-10: Modbus Commands registers
Description
Command Register
Command Function Register
Table 4-11: Examples of Command values
Command Value
1
96
98
105
4096
A complete list of Modbus Commands is found at the end of chapter 11.
Function Format for "Clear All" command:
Table 4-12: Function Format for "Clear All" command
Slave #
Function
Data Starting
Address
FE
10
0080
Table 4-13: Function Format for "Clear Energy Use Data" command
Slave #
Function
Data Starting
Address
FE
10
0080
Memory Map Address
DEC
HEX
62258
F332
62259
F333
62260
F334
62261
F335
62262
F336
62263
F337
Byte
Data 1 Data 2 Data 3 Data 4 Data 5 Data 6 Data 7 Data 8 Data 9
Count
2C
4164 6D69 6E69 7374 7261 746F 7200 0
0
0
0
0
Memory Map Address
DEC
40129
40130
Value Description
Reset
Clear All Records
Clear Events
Clear Energy Use Data
Force Virtual Input 1
Number of
Byte count
Setpoints
0002
04
Number of
Byte count
Setpoints
0002
04
Value to be written
DEC
HEX
0
0000
0
0000
0
0000
0
0000
0
0000
0
0000
0
0
0
0
HEX
0x0080
0x0081
Data 1
Data 2
0005
0060
Data 1
Data 2
0005
0069
DEVICE
0
0
4–35

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