L-INX User Manual
104
LOYTEC
Version 4.0
LOYTEC electronics GmbH
The
OPC
column provides check boxes for each data point. If checked, the respective data
point is exposed to OPC on the device. Deselect the check box, if a data points shall not be
exposed to OPC. Note, that deselected data points do not add to the OPC tag limit.
The
Param
column provides check boxes for each data point. If checkded, the respective
data point is exposed to the parameter file. The
PLC
column provides check-boxes, which
define if data points are visible inside the IEC61131 PLC program.
New objects may be created in the selected folder by pressing the
New
button to the right of
the list or via the
New
command in the context menu. A plus
sign in the list indicates
that the data point contains sub-points. Clicking on the plus
sign expands the view.
For the alarming, scheduling, trending (AST) features, there are columns, which display
icons for data points that are attached to an AST function. See Table 11 for details.
Icon
Data Point Usage
Data point is scheduled
Data point has an active alarm condition
Data point has an inactive alarm condition.
Data point is a trigger for e-mails
Data point used for trending
Table 11: Icons for used data points in the data point list view.
6.2.4 Property View
When one or multiple data points are selected, the available properties are displayed in the
property view. Properties which are read-only are marked with a lock
sign. When
applying multi-select, only those properties common to all selected data points are
displayed. Depending on the network technology and data point class, different properties
may exist.
Data point properties common to all technologies:
Datapoint Name
: This is the technology-independent data point name. This name may
be longer than and different to the name of the native communication object (i.e.,
network variable). Data point names must be unique within a given folder. The
maximum length is limited to 64 ASCII characters.
Datapoint Path
: This informational property specifies the entire path of the data point
within the data point hierarchy. The maximum length is limited to 64 ASCII characters.
Datapoint Description
: This is a human-readable description of the data point. There
are no special restrictions for a description.
OPC Tag
: If enabled, the data point will be exposed to OPC. If not enabled, this data
point does not contribute to the limit of OPC tags.
Parameter
: If enabled, the data point will be exposed to the parameter file. Those data
points are visible to the LWEB-821 master parameter editor. A parameter data point is
also persistent. See Section 5.1.5.
PLC IEC61131 Variable
: If enabled, the data point will be usable in the IEC61131
PLC program.
Use Pollcycle value as
: For input data points, this property defines whether the input
shall use a receive timeout or be constantly polling. See Section 5.1.2.
