Lenze PLC Designer PLC Designer (R3-1) - Manual (Page 866)

L-force | PLC Designer
Device Editors
864 DMS 4.1 EN 03/2011 TD29
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Note: Mapping of "to big" data types: If a variable of a datatype which is bigger than
a byte, gets mapped on a byte address, there the value of the variable will be cut to
byte size! This means the following for the monitoring of the value in the mapping
dialog: In the root element of the address the value of the variable - as currently
valid in the project - will be displayed. In the bit elements below the particular bit
values will be monitored, which however might not be enough for the complete
variable value.
Reset mapping: Using this button will reset the mapping settings to the defaults
defined by the device description file.
Always update variables: If this option is activated, all variables will be updated in
each cycle of the bus cycle task, no matter whether they are used or whether they are
mapped to an input or output.
Hint: Alternatively an address may be read out or written to within the programming
code. Example in ST:
Var := IB100;
QX12.3 := TRUE;
Noticing possible changes of the device configuration we advise to implement such
assignments within the device configuration dialog.
IEC Objects:
This part of the dialog only is available, if implicitly an instance of the device object has
been created, which can be accessed by the application (for example in order to restart
a bus or to pull information). Whether such an instance is available and how it might
be used, depends on the device type and is described in the online help pages for the
specific device configuration.
Bus cycle options:
This configuration options will be available for devices with cyclic calls before and after
reading inputs or outputs. It allows to set a device specific bus cycle task:
Per default the "parent" bus cycle setting will be valid (Use parent bus cycle setting),
that is the device tree will be searched up for the next valid bus cycle task definition.
To assign a specific bus cycle task, select the desired one from the selection list. The list
provides the tasks currently defined in the applications' task configuration.