9 Modbus RTU – integrated Modbus port specification
9.3 Modbus register map
66 PXR Electronic trip unit 01/21 MN012005EN www.eaton.com
Table 27: Setting group 2: “Modbus” group
403022
Settings - neutral
protection
R/W Unsigned Adjusts the neutral protection of an NZM
PXR25 breaker with a “/VAR” variably
adjustable neutral conductor
0 = 0 %
60 = 60 %
100 = 100 % (default setting)
The lower setting affects the LSI
protection functions of the switch, but
not the ground-fault protection function
(“G”).
Note:
L = long delay (= overload protection I
r
)
S = short delay (= short-time delayed
short-circuit protection I
sd
)
I = instantaneous (= instantaneous short-
circuit protection I
i
)
G = ground fault (= ground fault
protection I
g
)
%
403023
1)
Load alarm 2 R/W Unsigned Load alarm 2 level (AL2 = x % x I
r
):
50 - 120 (in increments of 1)
%
403024
Pre-alarm of the ground-
fault release
R/W If the ground-fault protection function is
set to “trip” (see register 403017),
a pre-alarm can also be set.
(GF
pre-alarm
= x % x I
g
)
50 - 100 (in increments of 5 %)
%
1) Function is not supported by PXR20!
Register
number
Bit
field
Mask field Setpoint name R/W Format Description or value Unit
Register
number
Bit
field
Mask field Setpoint name R/W Format Value Unit
403000 15 - 0 0xFFFF Password W Encoded 0000 (default setting) –
403001 15 - 0 0xFFFF Group 2 = on-board
Modbus
R/W Encoded 0x02FF –
403002
15 - 0 Integrated Modbus -
communication address
R/W Encoded 001 - 247
(default setting 002)
–
403003
15 - 0 Integrated Modbus - baud
rate
R/W Encoded 00: 9,600 bit/s
01: 19,200 bit/s (default setting)
02: 38,400 bit/s
02: 57,600 bit/s
–
403004
15 - 0 Integrated Modbus - parity R/W Encoded 00: none
01: odd
02: even (default setting)
–
403005 15 - 0 Integrated Modbus -
stop bit
R/W Encoded 00: 1 bit
01: 2 bits (default setting)
–
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