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C.6: DNP Lite Register Map
Object 10 – Binary Output States
Object
Point
Var
Description
10
0
2
Reset
Counters
10
1
2
Change to Modbus
RTU Protocol
10
2
2
Reset
Cntrs (Max / Min )
Object 12 – Control Relay Outputs
Object
Point
Var
Description
12
0
1
Reset
Counters
12
1
1
Change
Modbus
Protocol
12
2
1
Reset Demand
Counters (Max /
Min)
Object 20 – Binary Counters (Primary Readings) - Read via Class 0 only
Object
Point
Var
Description
20
0
5
W-hours,
Positive
20
1
5
W-hours,
Negative
20
2
5
VAR-hours,
Positive
20
3
5
VAR-hours,
Negative
20
4
5
VA-hours, Total
E
Electro Industries/Gauge Tech
Format
Range
Energy
BYTE
Always 1
BYTE
Always 1
Demand
BYTE
Always 1
Format
Range
Energy
N/A
N/A
to
N/A
N/A
RTU
N/A
N/A
Format
Range
UINT32
0
99999999
UINT32
0
99999999
UINT32
0
99999999
UINT32
0
99999999
UINT32
0
99999999
Doc# E149701
Multiplier
Units
N/A
None
N/A
None
N/A
None
Multiplier
Units
N/A
none
N/A
none
N/A
none
Multiplier
Units
to
Multiplier = 10(n-d),
W hr
where n and d are
derived from the
energy format. n =
0, 3, or 6 per
energy format scale
and d = number of
decimal places.
to
W hr
to
VAR
hr
to
VAR
hr
to
VA hr
Comments
Read by Class 0 Only
Read by Class 0 Only
Read by Class 0 Only
Comments
Responds
to
Function
5
(Direct
Operate),
Qualifier
Code 17x or 28x, Control
Code 3, Count 0, On 0 msec,
Off 1 msec ONLY.
Responds
to
Function
6
(Direct Operate - No Ack),
Qualifier Code 17x, Control
Code 3, Count 0, On 0 msec,
Off 1 msec ONLY.
Responds
to
Function
5
(Direct
Operate),
Qualifier
Code 17x or 28x, Control
Code 3, Count 0, On 0 msec,
Off 1 msec ONLY.
Comments
example:
energy format = 7.2K and W-
hours counter = 1234567 n=3
(K scale), d=2 ( 2 digits after
decimal point), multiplier =
10(3-2) = 101 = 10, so energy
is 1234567 * 10 Whrs, or
12345.67 KWhrs
C-
3
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