9 Modbus RTU – integrated Modbus port specification
9.3 Modbus register map
PXR Electronic trip unit
01/21 MN012005EN
www.eaton.com
59
The setting groups are assigned as follows:
•
Group 0: System group
•
Group 1: Protective group
•
Group 2: Modbus group
•
Group 3: CAM group
Table 25: Setting group 0: “System group”
Register
number
Bit
field
Mask field
Setpoint name
R/W
Format
Description or value
Unit
403000
15 - 0
Password
W
–
0000 (default setting)
–
403001
15 - 0
0xFFFFFF
Group 0 = system
R/W
0x00FF
–
403002
12 - 0
0x1FFFF
Rated current
R
Encoded
NZM2: 25, 40, 63, 90, 100, 140, 160, 200,
220, 250, 300
NZM3: 250, 350, 400, 450, 600, 630
NZM4: 550, 600, 630, 800, 875, 1000,
1200, 1250, 1400, 1600
A
403003
2 - 0
0x0007
Frame size
R
Encoded
The frame size indicates the breaker
type.
11: NZM2
12: NZM3
13: NZM4
–
403004
3 - 0
0x000F
Trip type version – part 1
R
Encoded
Bit 0: LdSel: with overload protection
I
r
= 1
Bit 1: SdSel: with short-time delayed
short-circuit protection I
sd
= 1
Bit 2: InstSel: with instantaneous short-
circuit release I
i
= 1
Bit 3: GfSel: with ground-fault protection
I
g
= 1
Bit 4: ARMSel: with maintenance mode =
1
Bit 5: OvrideSel: with instantaneous
release function = 1
Bit 6: not used
Bit 7: MotorSel: with motor-protection
function = 1
Bit 8: NeuSenorSel:
0: 3-pole device
1: 4-pole device
Bit 9: ThermalSel:
with thermal memory = 1
Bit 12: VoltSel: with voltage meter = 1
Bit 13:
0: PXR20
1: PXR25
–
403005
Trip type version - part 2
R
Encoded
Bit 0: ModbusSel: with integrated
Modbus RTU = 1
Bit 1: CAMSel: with CAM RS422 = 1
Bit 2: IOModuleSel: with IO module = 1
Bit 3: RelaySel: with relay module = 1
Bit 4: ZSISel: with zone selectivity = 1
Bit 12: NZM_ACB_Sel:
degree of protection NZM = 1, IZMX = 0
Bit 13: IECSel: Standard IEC = 1, UL = 0
–
