WirelessHART Fieldgate SWG70
10 Engineering
Hauser
63
10.2 Modbus Mapping
10.2.1 Modbus Settings
Modbus Settings
determines how the Modbus information is to be transmitted by Fieldgate
SWG70 and where the information is to be found. It also allows the selection of automatic or
manual mapping. The set-up of the Modbus communication parameters (address, baudrate etc.) is
described in Chapter 8.3.4.
More details on the Modbus Interface itself and the way in which the HART parameters are mapped
to the Modbus registers is to be found in Appendix A.
1 Click on the
Engineering =>Modbus Mapping =>Modbus Settings
leaf to display the
associated parameters:
–
The significance of the parameters is described in the table below
Modbus Settings
parameters
Parameter
Meaning
Example
Default
Swap Option
Selects frame format swap option for Modbus data transmission
(see also Appendix A.1.3)
• Big Endian: no swap
Register 0
Register 1
Source bytes: [0xABCD]
[ 0xEFGH]
Target bytes: [0xABCD]
[ 0xEFGH]
• Little Endian: Register swap;
Register 0
Register 1
Source bytes: [0xABCD]
[ 0xEFGH]
Target bytes: [0xEFGH]
[ 0xABCD]
The Swap Option does not apply to the Input Status registers
Big Endian
Big Endian
Addressing Method
Selects whether the mapping is to be done automatically or
manually
• Auto: Mapping is done automatically according to the rules
described in Appendix A.2
– There is no automatic mapping of Input Status
– The dialogues Input Status and Input Registers are deactivated
• Manual: Mapping is done manually or semi-automatically in the
Input Status and/or Input Register dialogues
Manual
Auto
Read Modbus Registers
Mode
Determines in which registers the mapping is to be done
• Input Registers only: Values mapped to Input Registers
300001...365536
• Input and Holding: Values mapped to Input Registers
300001...365536 and Holding Registers 400001...465536
Inactive
Inactive
Summary of Contents for Fieldgate SWG70
Page 2: ......
Page 119: ...WirelessHART Fieldgate SWG70 D Appendix ANATEL Approval Endress Hauser 117 For your notes ...
Page 120: ...D Appendix ANATEL Approval WirelessHART Fieldgate SWG70 118 Endress Hauser For your notes ...
Page 121: ...WirelessHART Fieldgate SWG70 D Appendix ANATEL Approval Endress Hauser 119 For your notes ...
Page 123: ......
Page 124: ...www endress com worldwide ...
