WirelessHART Fieldgate SWG70, Руководство по эксплуатации, Страница: 110 / 124

C Appendix: HART OPC Connection WirelessHART Fieldgate SWG70
108 Hauser
C.3.3 Device properties
1 Click on the second CH001 node in the first branch then right click on the Device Long Tag
that appears in the right workspace and select Properties
– For HART Multidrop, several devices may appear
2 The Device Properties dialog opens at the Process/Output tab
This contains information on the primary value and loop current
– Gray fields are parameters loaded from the device memory
– White fields can be edited, to store changes, press Send
3 The significance of the parameters can be taken from the table below
Process/Output
parameters Parameter Meaning
Process
PV Indicates the current value of the primary variable
Unit select Indicates/changes the unit of the primary variable
Loop Current
Analog Value Loop-current measured by adapter (always 4 mA for HART multidrop)
Percent Range Primary value expressed as percentage of range
Upper Range Value Indicates/changes upper range value of device
Lower Range Value Indicates/changes lower range value of device
Damping Indicates/changes output damping of device
Transfer Function Indicates the type of characteristic used to convert current (mA) to engineering units