Endress+Hauser WirelessHART Fieldgate SWG70 - Data Types

Modbus Interface WirelessHART Fieldgate SWG70
118 Endress + Hauser
16.1.3 Data types
Fieldgate SWG70 supports three different data types, which are interpreted and stored as
described below:
• Floating point, Unsigned Integer16, Unsigned Integer8
Floating point
Unsigned16
Unsigned8
Value range (±) 1.175 * 10
-38
to 3.403 * 10
38
Byte Structure
Byte Structure Float Swapped Float
Modbus Register 1
Modbus Register 2
Sign Exponent (8 bit) Fraction (23 bit)
31 0
23
015
31 16
31 16
015
Value range 0 to 65.535
Byte Structure
Byte Structure Unsigned Integer16 Swapped Unsigned Integer16
Modbus Register 1
Value (16 bit)
15
0
015 015
Value range 0 to 255
Byte Structure
Byte Structure Unsigned Integer8
(Integer 8 without sign)
Swapped Unsigned Integer8
Modbus Register 1
Value (8 bit)
15
70
00000000
015 7
00000000
015 7
0000000
0