Eaton Power XL SmartWire-DT DX-NET-SWD Series, Руководство пользователя

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4 Commissioning
4.5 Acyclic data
48
DX-NET-SWD... 08/14 MN04012009Z-EN www.eaton.com
Bit sequence: V2
In this bit string, 16 variables of type BOOLEAN are represented in two
octets. Code: 115
dec
= 73
hex
Time constant: D2
Values of time data type D2 always refer to a specific, constant scan time T
a
.
This time Ta is the shortest scan time (defined in PNU 962) and is required
here in order to evaluate D2.
The value for D2 can be calculated as follows: D2 = i x T
a
/16384
Time constant: T2
Values of time data type T2 are always relative to a specific constant scan
time T
a
. T
a
is the shortest scan time (defined in PNU 962).
It is required here to calculate T2. The following formula applies: T2 = i x T
a
Standard data types
Octet Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit3 Bit 2 Bit1
1 15 14 13 12 11 10 9 8
2 7 6 5 4 3 2 1 0
data type Code
(dec) Code
(hex) Byte Value Range Resolution
D2 Time constant 120 7 8 1 0 ≦ i ≦ (2 - 2
-14
) x T
a
2
-14
x T
a
Data type Code
(dec) Code
(hex) Byte Value Range Resolution
T2 Time constant (16 Bit) 118 7601 1 0 ≦ i ≦ 32767 x T
a
T
a
T2 Time constant (32 Bit) 11 9 77 2 0 ≦ i ≦ 4294967295 x T
a
T
a
Data type Coding
Integer8 2
Integer16 3
Integer32 4
Unsigned16 6
Unsigned32 7
OctetString 10
￫
More detailed information on the data types: IEC 61158-5: 2003