Data Types - Eaton Power XL SmartWire-DT DX-NET-SWD Series Manual

4.5.2 Data Types

4.5.2.1 PROFIdrive specific
There are special data types defined for PROFIdrive communications:
PROFIdrive-specific and standard data types.
TimeDifference (13
dec
The value used for TimeDifference is stored in the Sampling Time (PNU 962)
parameter.
Data type
TimeDifference
Example:
100 ms ≙ 4971 ≙ 136B
dec
86400000 ms (= 1 day) ≙ 4294967295
Normalised value: N2
N2 is a normalized value for relative scaling. N2 falls within a range of -200%
to +200%.
Data type
N2 Normalized value (16 Bit) 113
Conversion examples:
Unsigned bit:
0 = 0x0000 ≙ 0%
dec hex
1 = 0x0001 ≙ 0.0061%
dec hex
16384 = 0x4000
dec hex
32767 = 0x7FFF
dec hex
With a sign bit (bit 15):
-1 = 0xFFF ≙ -0.0061%
dec hex
-16384 = 0xC000
dec hex
-32768 = 0x8000
dec hex
Values are coded as follows: the most significant bit (MSB) comes directly
after the SN bit (sign bit) in the first octet: SN = 0: positive numbers,
including zero; SN = 1: negative numbers
Octet Bit 8 Bit 7
-0
1 SN 2
-7 -8
2 2 2
-15 -16
3 2 2
-23 -24
4 2 2
DX-NET-SWD... 08/14 MN04012009Z-EN www.eaton.com
)
Code Code Bytes
(dec) (hex)
13 D 2
hex
dec
Code Code Bytes
(dec) (hex)
7 1 2
≙ 100%
≙ 199.99%
≙ -100%
≙ -200%
Bit 6 Bit 5
-1 -2
2 2
-9 -10
2 2
-17 -18
2 2
-25 -26
2 2
4 Commissioning
4.5 Acyclic data
Value Range
0 ≦ i ≦ 4294967295
≙ FFFFFFFF
hex
Value Range
-14
-200 % ≦ i ≦ (200 - 2 ) %
Bit 4 Bit3 Bit 2
-3 -4 -5
2 2 2
-11 -12 -13
2 2 2
-19 -20 -21
2 2 2
-27 -28 -29
2 2 2
Resolution
-31
2 ≙ 0.021 ms
Resolution
2-
14
≙ 0.0061 %
Bit1
-6
2
-14
2
-22
2
-30
2
47