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Parameter and data type structure description
Parameter description:
DP has a number of describing attributes (see rigth).
Read/write on parameter description is made by the
PCV part using the RC commands 4/5 and subindex
of the desired description element.
Size attribute
The size index and the conversion index for each
parameter can be taken from the parameter list on
page 36.
Physical unit
Size index
0
Time
4
Energy
8
Power
9
Rotation
11
Torque
16
Temperature
17
Voltage
21
Current
22
Resistance
23
Ratio
24
Relative change
27
Frequency
28
18
FCM 300 PROFIBUS / VLT 2800 PROFIBUS
Measuring unit
Designation
No dimension
second
s
millisecond
ms
minute
min
hour
h
day
d
watthour
Wh
kilowatthour
kWh
megawatthour
MWh
milliwatt
mW
watt
W
kilowatt
kW
megawatt
MW
rotation per minute
RPM
newtonmeter
Nm
kilonewtonmeter
kNm
degree Celsius
°C
millivolt
mV
volt
V
kilovolt
kV
milliampere
mA
ampere
A
kiloampere
kA
milliohm
mOhm
ohm
Ohm
kiloohm
kOhm
per cent
%
per cent
%
hertz
Hz
kilohertz
kHz
megahertz
MHz
gigahertz
GHz
PNU
Extended characteristics
Conversion index
0
0
-1
-2
-3
70
74
77
0
3
6
-3
0
3
6
0
0
3
0
-3
0
3
-3
0
3
-3
0
3
0
0
0
3
6
9
MG.90.A2.02 – VLT is a registered Danfoss trademark
Characteristics
Subindex 1
Size of elements
Subindex 2
Size attributes
Subindex 4
Lower limit
Subindex 7
Upper limit
Subindex 8
Subindex 10
Conversion factor
1
1
0.1
0.01
0.001
60
3600
86400
1
1000
6
10
0.001
1
1000
6
10
1
1
1000
1
0.001
1
1000
0.001
1
1000
0.001
1
1000
1
1
1
1000
10
6
10
9
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