Trends

The settings listed below apply to data types connected to the CDF time series resource type.

In InField, the settings on the Trends tab are visible on the Trends page from the sidebar or on the Overview page.

Trends are identical to time series in CDF. Some tags may have many connected time series, but not all are equally important. In this section, you decide which time series to show as the default and which time series you want to filter out.

OPC UA time series

InField can display value ranges and alarm limits for time series if CDF streams data from the OPC UA protocol. If you want to show the range of a time series, the time series must have the following metadata field:

Metadata field	Type	Comment
EURange	string	example:(0,100)

You'll see the value range on the Time series card in the sidebar on the Trends page.

OPC UA time series alarm limits

Alarm limits are displayed as labels on the time series on the Trends page and listed on the Properties card on the Overview page. The alarm limits are sorted as LL (Low, Low), L (Low), H (High), and HH (High, High).

If you want to add alarm limits for time series, the OPC UA time series must have an OPC asset that's a child of the equipment asset with the same name. For example:

To show alarm limits, these metadata fields must exist on the OPC UA child asset:

• LO_LIMx.Value indicates the value of the alarm limit.

• USE_LIMx.Value indicates if the alarm limits are in use or not.

Low, Low

Metadata field	Type	Comment
LO_LIM2.Value	string	5.0
USE_LO_LIM2.Value	string	false or true

Low

Metadata field	Type	Comment
LO_LIM1.Value	string	10.0
USE_LO_LIM1.Value	string	false or true

High

Metadata field	Type	Comment
HI_LIM1.Value	string	80.0
USE_HI_LIM1.Value	string	false or true

High, high

Metadata field	Type	Comment
H1_LIM2.Value	string	90.0
USE_HI_LIM2.Value	string	false or true

Alarm limits and value ranges are available on both desktop and handheld devices.

Note

InField doesn't display alarm limits and value ranges with no value.

Field	Description	Default value
Default visible trends	Enter a prioritized list of trend names to display on the Trend and Overview pages. Only one time series is visible at the time, and this list specifies the prioritized order. Use regular expressions to filter the list. If you don't enter any values, all time series display.	-
Regex pattern to filter out unwanted matches of default visible trends	Enter a regular expression to filter out time series by the names remaining after the filter above. End-users are still able to select the trends. For instance, if you want 21PT1019.PV to be the default selected time series, and not 21PT1019.SOMETHING.PV or 21PT1019SOMETHING.PV, enter (^((?!@Ext[0-9]_).)_.PV\$). If you don't specify a default visible trend, this filter doesn't apply.	-
Hidden trends filer	Use regular expressions to hide trend names from the Trends page. Use only for trends that aren't helpful to show, such as bit-coded values, strings, or binary values (examples: STATUSWORD, ALARMBYTE, OS_ENABLED).	-