GE 845 Instruction Manual page 141

CHAPTER 4: SETPOINTS
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
Table 4-24: Examples of Command values
Command Value
1
96
98
105
4096
Function Format for "Clear All" command:
Table 4-25: Function Format for "Clear All" command
Slave # Function Data Starting
Address
FE 10 0080
Table 4-26: Function Format for "Clear Energy Use Data" command
Slave # Function Data Starting
Address
FE 10 0080
Table 4-27: Function Format for "Force Virtual Input 1" command
Slave # Function Data Starting
Address
FE 10 0080
Commands using Modbus Function 05H (Execute Operation)
Specific command operations such as described above can also be performed using
function code 05H.
Table 4-28: Format for Function Code 05H
Master Transmission
Slave Address
Function Code
Operation Code
Code Value
CRC
Table 4-29: Examples of Command values
Command Value
1
96
98
105
4096
Table 4-30: Function Format for Reset command
Slave # Function
FE 05
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
Number of Byte count
Setpoints
0002 04
Byte# Example
1 FE
1 05
2 00 01
2 FF 00
2 DF 6A
Value Description
Reset
Clear All Records
Clear Events
Clear Energy Use Data
Force Virtual Input 1
Operation Code
0001
DEVICE
Data 1 Data 2
0005 0060
Data 1 Data 2
0005 0069
Data 1 Data 2
0005 1000
Description
message for slave # 254
execute operation
operation code
perform function
CRC error code
Code Value
FF00
4–37