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9 Modbus RTU – integrated Modbus port specification
9.3 Modbus register map
74
PXR Electronic trip unit
01/21 MN012005EN
www.eaton.com
Table 34: Remote control
9.3.8 Date and time
The release supports the reading and writing of real-time clock information
by the Modbus master. Eight registers, starting with register number
402921, are reserved for this purpose (
table 35, page 74). The system
clock can be set using function code 16.
Table 35: Real-time clock
Bit
Command group
Definition
Byte 2
Byte 1
Byte 0
Reset
Reset the trip
0
0
2
Reset the min./max. values of the L-N voltages
1)
0
1
15
Reset the min./max. values of the L-L voltages
1)
0
1
14
Reset the peak power demand
1)
0
0
4
Reset all min./max. values
0
1
4
Reset the energy
1)
0
0
8
Reset the power-up display
0
0
3
Maintenance
mode
Activate the maintenance mode
1
0
8
Deactivate the maintenance mode
1
0
9
1) PXR25 only!
Modbus
register
number
Modbus
register
address
Definition
Data range
402921
0x0B68
Month
1 - 12
402922
0x0B69
Day
1 - 31
402923
0x0B6A
Year
2000 - 2099
402924
0x0B6B
Day of the week
1: Sunday
…
7: Saturday
402925
0x0B6C
Hour
0 - 23
402926
0x0B6D
Minute
0 - 59
402927
0x0B6E
Seconds
0 - 59
402928
0x0B6F
1/100 of a second
0 - 99