FCM 300 / FCD 300 / VLT
®
2800 / DP V1 PROFIBUS
■
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 in
the respective Operating Instructions.
Physical unit
Size index
Measuring unit
Designation
Conversion
index
Conversion
factor
0
No dimension
second
s
0
1
-1
0.1
-2
0.01
Time
4
millisecond
ms
-3
0.001
minute
min
70
60
hour
h
74
3600
day
d
77
86400
watthour
Wh
0
1
Energy
8
kilowatthour
kWh
3
1000
megawatthour
MWh
6
10
6
milliwatt
mW
-3
0.001
watt
W
0
1
kilowatt
kW
3
1000
Power
9
megawatt
MW
6
10
6
Rotation
11
rotation per minute
RPM
0
1
newtonmeter
Nm
0
1
Torque
16
kilonewtonmeter
kNm
3
1000
Temperature
17
degree Celsius
°C
0
1
millivolt
mV
-3
0.001
Voltage
21
volt
V
0
1
kilivolt
kV
3
1000
milliampere
mA
-3
0.001
Current
22
ampere
A
0
1
kiloampere
kA
3
1000
milliohm
mOhm
-3
0.001
Resistance
23
ohm
Ohm
0
1
kiloohm
kOhm
3
1000
Ratio
24
per cent
%
0
1
Relative change
27
per cent
%
0
1
hertz
Hz
0
1
kilohertz
kHz
3
1000
megahertz
MHz
6
10
6
Frequency
28
gigahertz
GHz
9
10
9
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