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
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