Danfoss VLT PROFIBUS DP MCA 101 Programming Manual page 36

Parameter Access
5.4.2 Size Attribute
Find the size index and the conversion index for each
parameter from the parameter list in the respective
operating instructions. See also size and conversion indices
in Table 5.18.
Physical Size
quantity index
0
5 5
Time 4
Energy 8
Power 9
Rotation 11
Torque 16
Tempera- 17
ture
Voltage 21
Current 22
Resistance 23
Ratio 24
Relative 27
change
Frequency 28
Table 5.18 Size Index and Conversion Index
34
VLT
SI unit name SI unit Conver-
symbol sion
index
No dimension
Second s 0
-1
-2
Millisecond ms -3
Minute min 70
Hour h 74
Day d 77
Watt hour Wh 0
Kilowatt hour kWh 3
Megawatt hour MWh 6
Milliwatt mW -3
Watt W 0
Kilowatt kW 3
Megawatt MW 6
Rotation per RPM 67
minute
Newton meter Nm 0
Kilo newton kNm 3
meter
Degree celsius ºC 0
Millivolt mV -3
Volt V 0
Kilovolt kV 3
Milliampere mA -3
Ampere A 0
Kilo ampere kA 3
Milliohm mΩ -3
Ω
Ohm 0
Kiloohm kΩ 3
Percent % 0
Percent % 0
Hertz Hz 0
Kilohertz kHz 3
Megahertz MHz 6
Gigahertz GHz 9
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PROFIBUS DP MCA 101
5.4.3 Object and Data Types Supported
Data type
3
4
5
6
Conver-
7
sion
9
factor
10
33
1
35
0.1
54
0.01
0.001
60 Table 5.19 Supported Data Types
3600
86400 5.4.4 Standardized Value
1
1000
The frequency reference value transmits to the frequency
10 6
converter in the form of a 16-bit word. The value transmits
0.001
in integers (0–32767). The value 16384 (4000 hex)
1
corresponds to 100%. Negative numbers are formed with
1000
the aid of the 2s complement.
10 6
0%=0 (0h), 100%=2
1
Data type
1
Range
1000
Resolution
Length
1
Table 5.20 N2 Data Type
0.001
1
Msb is the first bit after the sign bit in the first byte.
1000
•
0.001
Sign bit = 0 = positive number.
1
•
Sign bit = 1 = negative number.
1000
0.001
Bit
1
8
1000
7
1
6
1
5
4
1
3
1000
2
6
10
1
10 9
Table 5.21 Notation is 2s Complement
Short name Description
I2 Integer 16
I4 Integer 32
– Unsigned 8
O2 Unsigned 16
O4 Unsigned 32
– Visible string
– Byte string
N2 Standardized value (16 bit)
V2 Bit sequence
– Time difference without date
indication
14 (4000 h)
N2
-200% to +200%
2 -14 =0.0061%
2 bytes
Byte 1 Byte 2
SIGN
7
2
2 14 2 6
2 13 2 5
12
2 24
2 11 2 3
2 10 2 2
9 1
2 2
2 2 0
MG37G202