Lenze PLC Designer PLC Designer (R3-1) - Manual (Page 413)

L-force | PLC Designer
Menu Commands sorted by Categories
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DMS 4.1 EN 03/2011 TD29 411
Choose one of the following options concerning 'What do you want to do' with the
variable:
Prepare a new value for the next write or force operation: Depending on the data type
of the variable you can enter a new number or string which you want to get assigned
to the variable.
Remove preparation with a value. The prepared value for a variable will be removed.
Release the force, without modifying the value.: The variable will be marked as
<Unforce> and thus is prepared to get the current value read from the PLC.
Release the force and restore the variable to the value it had before forcing it. The
variable will be marked as <Unforce and restore> and thus is prepared to get the value
it had before forcing.
According to the chosen option, after leaving the dialog with OK, in the 'Prepared
value' field of the monitoring view the variable will show a new value or "<Unforce>"
or "<Unforce and restore>". At the next 'Force values' resp. 'Write values' (for the first
option) command the prepared values will be set.
12.22.19 Unforce values
Default Shortcut: <Alt> + <F7>
WARNING!
Extraordinary changes of variable values in an application currently running on a
controller can cause unwanted behaviour of the controlled system.
Evaluate possible dangers before Writing or Forcing of variables and make
appropriate security precautions.
Depending on the controlled system, damages to machines and parts could result,
or even health and life of persons could be endangered.
This command (category Online) is available in Online Mode. It serves to release the
forcing for all variables of the currently active application.
The variables will get the current value read from the PLC. This corresponds to option
'Release the force, without modifying the value.' which can be activated in the 'Prepare
Value' dialog for a forced variable.
Note: Command "Unforce values [all applications]" which effects all applications of
a project, is not per default inserted in any menu. (if needed, please see the
Customization dialog)