40
PT UNIT USER MANUAL
APRIL 2023 www.eaton.com.cn
Table 11. Remote Control.
Control
Group
Definition
Byte 2 Byte 1 Byte 0
Reset
Reset trip
0
0
2
Reset powered up indication
0
0
3
Reset peak demand watts
0
0
4
Reset energies
0
0
8
Reset operations count
0
1
2
Reset runtime
0
1
3
Reset all min/max values
0
1
4
Reset min/max currents
0
1
13
Reset min/max line-to-line voltages
0
1
14
Reset min/max line-to-neutral voltages 0
1
15
Reset trip count
0
5
1
Reset temperature
0
5
2
Reset all diagnostics information
0
5
3
Control
Group
Definition
Byte 2 Byte 1
Byte 0
Open/Close
Breaker
Open Breaker (for 2 seconds
opens relay which is assigned
to function "Open Command”)
1
0
0
Close Breaker (for 2 seconds
closes relay which is assigned
to function “Close Command")
1
0
1
Relay Remote
Control
Relay Output
4
1: Enabled
2: Disabled
1: Relay 1
2: Relay 2
3: Relay 3
A.3.8 Date and Time
The trip unit supports Modbus master to read real-time clock
information. Eight registers, starting from register number
402921, are used for this information, as defined in Table
A10. Detailed information is listed in Table A12.
Table 12. Real Time Clock
Definition
Modbus Register
Number
Modbus Register
Address
Data Range
Month
402921
0x0B68
1-12
Day
402922
0x0B69
1+31
Year
402923
0x0B6A
Day of week
402924
0x0B6B
1 = Sunday
7 = Saturday
Hour
402925
0x0B6C
0-23
Minute
402926
0x0B6D
0-59
Second
402927
0x0B6E
0-59
1/100th second
402928
0x0B6F
A.3.9 Internal Diagnosis
The trip unit supports internal Modbus diagnostics to moni-
tor internal Modbus port communication with function code
08. For different sub-function codes, diagnostics informa-tion
is listed in Table A13.
Table A13. Diagnostics.
Sub-function code Action
0
Echo query
1
Restart communication
4
Force listen
10
Clear counters
11
Modbus UART bus message count
12
Modbus UART CRC error count
13
Exception count
14
Slave message count
15
Slave no response count
16
Slave NAK count
17
Slave busy count
18
Modbus UART over run error count
20
Clear Modbus UART counters
23
Modbus UART framing error count
24
Modbus UART noise error count
25
Modbus UART parity check error count
26
MCU1 Firmware Version
27
MCU1 Firmware Reversion
28
MCU1 Firmware Build
29
MCU2 Firmware Version
30
MCU2 Firmware Reversion
31
MCU2 Firmware Build
32
MCU3 Firmware Version
33
MCU3 Firmware Reversion
34
MCU3 Firmware Build
35
USB Version
36
USB Reversion
37
Reset block of registers
Appendix A - Modbus Communication Port Setting