Operating instructions

WirelessHART Fieldgate SWG70 8 Fieldgate Configuration
Endress+Hauser 49
8.3.4 Modbus
The parameters contained in this leaf pertain to the set up of the Modbus communication to the
host on the interfaces offered by Fieldgate SWG70.
1 Click on the Wired Communication => Protocols => Modbus to display the associated
parameters:
– The significance of the parameters can be taken from the table overleaf, whereby mandatory
parameters are highlighted by bold type
Modbus parameters
Parameter Meaning Example Default
Bus Address
Selection
Specifies whether hardware (DIP switch 0-3) or software polling
address settings are to be used
DIP-Switch Software
Bus Address Sets the HART address of the wireless fieldgate when Bus Address
Selection is set to Software
– When DIP-Switch is selected, displays the setting
63 1
Baud Rate Selection Specifies whether hardware (DIP switch 4-5) or software baudrate
settings are to be used
• DIP Switch Setting: 9600 Bit/s - 57600 Bit/s
• Software Setting: 1200 Bit/s - 115200 Bit/s
Software Software
Baud Rate Sets the baudrate of the wireless fieldgate when Baud Rate
Selection is set to Software
– When DIP-Switch is selected, displays the setting
38400 38400
Parity Bit Sets the number of parity bits in the MODBUS RTU telegram
•Odd, Even or None
Odd
Stop Bit Sets the number of stop bits in the MODBUS RTU telegram
• 1, 1.5 or 2
11
Port Number
(Ethernet)
Sets Fieldgate SWG70 port number for MODBUS TCP transmission
– If the port number is changed, the default port remains open
– MODBUS TCP allows access for up to five masters
502