67
11 Modbus register map
PXR tRiP units foR PoweR Defense molDeD case ciRcuit bReakeRs
MN012007EN March 2019 www.eaton.com
11.3.8 Internal diagnostics
11.3.8.1 Modbus function 8ode 8 diagnostics
Trip unit support internal Modbus diagnostics to monitor internal Modbus port communica-
tion with function code 08. For different sub-function codes, diagnostics information is listed
below.
sub-function code
Data
action
0
Echo query
1
0000 remain the counters
00FF reset all counters
Restart communication
4
0000
Force listen
10
0000
Clear counters
11
0000
Modbus UART bus message count
12
0000
Modbus UART CRC error count
13
0000
Exception count
14
0000
Slave message count
15
0000
Slave no response count
16
0000
Slave NAK count
17
0000
Slave busy count
18
0000
Modbus UART over run error count
20
0000
Clear Modbus UART counters
23
0000
Modbus UART framing error count
24
0000
Modbus UART noise error count
25
0000
Modbus UART parity error count
26
0000
MCU1 firmware version
27
0000
MCU1 firmware reversion
28
0000
MCU1 firmware build
29
0000
MCU2 firmware version
30
0000
MCU2 firmware reversion
31
0000
MCU2 firmware build
32
0000
USB version
33
0000
USB reversion
34
0000
Reset block of registers
11.3.8.2 Real-time data diagnostics
Primary status
Definition
code
Open
0x01
Closed
0x02
Tripped
0x03
Alarmed
0x04
Picked-up
0x0D
Secondary status
Definition
code
Not applicable
0x01
Test mode
0x03
Powered-up since last trip/alarm reset
0x07
Alarm
0x08