39
9 Available protection settings
PXR tRiP units foR PoweR Defense molDeD case ciRcuit bReakeRs
MN012007EN June 2018 www.eaton.com
10.3.3 Set points registers
The trip unit’s set points are organized into groups. Each group can be considered as a
binary array of information which can be obtained through Modbus register access. Register
403001 is an R/W register used to select the particular group (Default selected group 0).
The high byte contains the requested group number, while the low byte must contain
255(0FF16). The set points register can be read using function code 03 or 04. Register
403001 can be written using function code 06 or 16. For trip units which support write set
points capabilities, the set points group 0/1/2 should be written one by one using function
code 06, the set points group four should be written the whole group using function code
16. Before reading or writing the set points, register 403001 should be written to choose
corresponding group. Before writing any set points, you must input correct password, and
write the set points within ten seconds after password checks ok.
Set points group 0: system group
Register
number
bit
field
mask
field
set point
name
R/w
format
Value definition
unit
403000
15-0
Password
W
“0000” (factory default)
403001
15-0
0xFFFF Group 0 = system R/W
0x00FF
403002
12-0
0x1FFF Rating
information
R
Encoded
PD2
PD3A: 125, 250, 400.
PD3B: 400, 600, 630.
PD4: 800, 1000.
PD5:
PD6:
A
403003
2-0
0x0007 Breaker frame
R
Encoded
00 --> NRX NF
01 --> NRX RF
11 --> NZM2
12 --> NZM3
13 --> NZM4
21 --> PD2
22 --> PD3-A
23 --> PD3-B
24 --> PD4
25 --> PD5
26 --> PD6