Measurement
WirelessHART Fieldgate SWG70
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E Hauser
12
Measurement
The Measurement table provides a comprehensive overview of all cached parameters and
values of all sub-devices.
• As the list is stored in a non-volatile memory, the card and channel number assignment
will remain the same after a restart of the Fieldgate or software.
• The dynamic values of each sub-device (analogue value, PV, SV, TV, QV) are cached by the
Fieldgate only if the sub-device publishes these values.
• After a network restart, the instrument list needs time to rebuild. During this time, some
information is set to 0 or replaced by wildcard characters.
• To remove a device from the list, use the Instrument List. See Chapter 10.1 "Instrument
Whenever a new wireless device joins the network, it is automatically inserted into the list.
Wired HART devices connected to a WirelessHART Adapter (SWA70) are also listed.
1. Click on the
Measurement
, leaf to open the dialog:
– In FieldCare right-click on the Fieldgate SWG70 node and select
Observe
.
Parameter
Meaning
Long Tag
Identifies Fieldgate within the plant network
– For HART 5.0 or lower, the texts in the "Message" parameter
IO card
Indicates the virtual I/O card number to which the device is mapped
Channel
Indicates the channel of the virtual I/O card to which the device is mapped
Device Type
Displays the device type as registered at the HART Communication Foundation
Status
Displays the communication status
–
Connected
–
Flashing: Devices connected, identification in progress
Continuous: Devices connected but not identified
–
Communication failure
Dev. Status
Displays the device status
–
Good
–
Out of specification
–
Failure
The device status displayed in the Operating Modes list may differ from the actual device
status because the HART status bits may be interpreted differently.
Loop current
Current in mA (for HART Multidrop = 4 mA)
PV
Primary value of the device
SV
Secondary variable of the device
TV
Tertiary variable of the device
QV
Quaternary variable of the device
"+", "–"
Expands or contracts the tree view
Refresh
Press this button to reload the operational mode parameters of all network devices