L-Gate User Manual 68 LOYTEC
Version 3.2 LOYTEC electronics GmbH
scaling factors. If enabled, the properties Custom Scaling Factor and Custom
Scaling Offset accept the scaling factors. See Section 5.2.6.
• Custom Scaling Factor, Custom Scaling Offset: These properties only exist, if linear
scaling is enabled. They apply to analog data points only. See Section 5.2.6.
• Only notify on COV: This property assists for binary and multi-state input data
points. It defines, if a data point shall trigger an update only when the value changes or
on every write. If this is enabled, consecutive writes with the same value do not trigger
an update. If you want to convey every write, disable COV on the data point.
• Persistent: This property defines, if the last written value shall be stored as a persistent
value. Persistent data points restore that value after a restart from the persistent
storage. See Section 5.2.4.
• Default Value: This property defines a default value (see Section 5.2.3). Enter a
default value to enable this feature in the data point. Delete the value entirely to
remove the default value. If no default value is defined, this property reads “N/A”. The
default is no default value.
• Point Type: This is the base data point type, e.g., “Analog Datapoint”.
• Direction: This is the data point direction. Use input or output as directions.
• Unit Text: For analog data points this property contains a human-readable text for the
engineering units of the scalar value, e.g., “kilogram”.
• Analog Datapoint Max Value: For analog data points this property contains the upper
limit of the supported value range. Note that this does not define an alarm limit.
• Analog Datapoint Min Value: For analog data points this property contains the lower
limit of the supported value range. Note that this does not define an alarm limit.
• Analog Datapoint Precision: For analog data points this property defines the number
of decimals. ‘0’ specifies an integer value. Display units may use this to format the
floating point value accordingly.
• Analog Datapoint Resolution: For analog data points this property defines the
smallest possible value increment.
• Analog Point COV Increment: This property is valid for analog input data points. It
specifies by which amount the value needs to change, before an update is generated. If
every write shall generate an update even when the value does not change, specify 0 as
the COV increment. If any value change shall generate an update, delete the value,
which results in Any.
• Active Text: For binary data points this property defines a human-readable text for the
active state (true).
• Inactive Text: For binary data points this property defines a human-readable text for
the inactive state (false).
• State Count: For multi-state data points this property defines the number of discrete
states.
• State Text: For multi-state data points this property defines a human-readable state
label for each state.
6.2.5 Managing Multistate Maps
Multistate data points have a descriptive set of state texts for their state IDs. To manage
those state IDs and state texts among many multistate data points, they refer to multistate
maps. Some technologies have a fixed set of such multistate maps others have freely
configurable multistate maps (e.g, user registers). Editing a multistate map affects all
multistate data points, which are using that particular map. It is not necessary to edit each
data point individually.
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