Eaton PowerXL DX-NET-DEVICENET, Руководство пользователя

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0 About this manual
0.4 Units of measurement
6
DX-NET-DEVICENET 02/14 MN04012005ZEN www.eaton.com
0.4 Units of measurement
Every physical dimension included in this manual uses international metric
system units, otherwise known as SI (Système International d’Unités) units.
For the purpose of the equipment's UL certification, some of these
dimensions are accompanied by their equivalents in imperial units.
Table 1: Unit conversion examples
0.5 Data Types
This manual refers to the following data types for the DeviceNet field bus
system:
Table 2: Data types in DeviceNet
designation US-American
value US-American
designation SI value Conversion value
Length 1 in (’’) inch 25.4 mm 0.0394
Power 1 HP = 1.014 PS horsepower 0.7457 kW 1.341
Moment of
torque 1 lbf in pound-force inches 0.113 Nm 8.851
Temperature 1 °F (T
F
) Fahrenheit -17.222 °C (T
C
) T
F
= T
C
× 9/5 + 32
Rotational
speed 1 rpm Revolutions per minute 1 min
-1
1
Weight 1 lb pound 0.4536 kg 2.205
Flow rate 1 cfm cubic feet per minute 1.698 m
3
/n 0.5889
Data type Data Length Range Name
[Bits] Min Max
BOOL 1 0 (FALSE) 1 (TRUE) Boolean
SINT 8 -128 127 Signed Short Integer
USINT 8 0 255 Unsigned Short Integer
INT 16 -32768 32767 Integer
UINT 16 0 65535 Unsigned Integer
DINT 32 -2
31
2
31
-1 Signed Double Integer
UDINT 32 0 2
32
-1 Unsigned Double Integer