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Address
Modbus Data Type
Parameters
Access
26
Discrete Input
I
1
overcurrent (I>/I>>) indication
R
27
Discrete Input
I
2
overcurrent (I>/I>>) indication
R
28
Discrete Input
I
3
overcurrent (I>/I>>) indication
R
29
Discrete Input
I
1
phase 1 to ground-fault (I
N
) indication
R
30
Discrete Input
I
2
phase 2 to ground-fault (I
N
) indication
R
31
Discrete Input
I
3
phase 3 to ground-fault (I
N
) indication
R
32
Discrete Input
Intermittent ground fault (I
N
>)
R
33
Discrete Input
Clockwise phase-sequence indication, ABC
R
34
Discrete Input
Counter-clockwise phase-sequence indication,
ACB
R
For more information about holding registers, see
B.4 Register-Type Data – Holding Registers
.
Table B-5
Holding Registers
Address Min/Max Value Parameters
Default
Unit
Type
1
–
Modbus frame configuration
0
–
uInt16
2
0 to 6
Modbus baud rate
6
bps
uInt16
4
1 to 247
Modbus ID
247
–
uInt16
5 to 8
–
Date and time
–
–
uInt16
9
0 to 1
Grid frequency
0
–
uInt16
10
10 to 360
Primary voltage
200
1/10 kV uInt16
11
0, 50 to 2500
Overcurrent trip value (I>>), high-set
0
A
uInt16
12
4 to 6000
Overcurrent response time (tI>>)
4
x 10 ms uInt16
13
0, 4 to 20000
Ground-fault trip value (I
N
>) (Group 1)
0
1/10 A
uInt16
14
4 to 6000
Ground-fault response time (tI
N
>) (Group 1) 4
x 10 ms uInt16
15
2
Transformer type
2
–
uInt16
16
0 to 2
Neutral-point treatment (Group 1)
2
–
uInt16
17
0 to 4
Language
1
–
uInt16
18
0 to 3
Voltage transformer secondary/low-power
voltage transformer
0
V
uInt16
19
0 to 2
Date type
0
–
uInt16
20
0 to 1
Time type
0
–
uInt16
21
0 to 30
V
max
alarm
0
%
uInt16
22
0 to 30
V
max
warning
0
%
uInt16
23
0 to 30
V
min
alarm
0
%
uInt16
24
0 to 30
V
min
warning
0
%
uInt16
25
0 to 100
Neutral-point displacement voltage V
NG
>
(Group 1)
30
%
uInt16
26
4 to 6000
Neutral-point displacement time tV
NG
>
(Group1)
10
x 10 ms uInt16
27
0, 3 to 480
Auto reset time
480
min
uInt16
28
50 to 1000
Rated primary current
300
A
uInt16
29
0, 50 to 2500
Overcurrent trip value I>, low-set
0
A
uInt16
30
0, 4 to 6000
Overcurrent response time (tI>), low-set
4
x 10 ms uInt16
31
0, 1 to 60
T1
0
s
uInt16
32
0, 1 to 25
T2
0
s
uInt16
Modbus Registers
B.2 Implementation of the Modbus Protocol
SICAM, Feeder Condition Monitor, Manual
97
E50417-H8940-C580-A4, Edition 03.2019
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