Function Keys; Help Text For Masks; Help Text For The Message Mask; Help Text For Variables - Omron NT4S Operation Manual

Standard Mode

4.10.2 Help Text For Masks

4.10.2.1 Help Text for the Message Mask

4.10.3 Help Text For Variables

4.11

Function Keys

4.11.1 Direct Selector Keys

156
A help mask can be created for every programmed mask. The link between the
current mask and help text is specified in the parameter settings.
All of the valid characters can be used to design the help mask. Help texts can be
called up directly by means of the Help key. As long as no data release has been
requested, the help text for the mask is displayed. Once the data release is request-
ed, the help text for the variable is shown.
Help masks can also be created for messages masks. Help texts are only available
for the mask. Any variables that may be embedded can not be linked to a help
mask.
The functionality is the same as that of help texts for masks. It is, in particular,
possible to display the valid range of values. The link between the help mask and
the variable is specified in the variable parameters.
Another important feature of the operating concept, in addition to the masks, are
the function keys and their LEDs. Function keys are user-programmable. They can
be used as direct selector keys for selecting more masks or as control keys for the
machine. When used as control keys, the integrated LEDs provide feedback in-
formation.
Programming the function keys as direct selector keys allows fast, direct access to
the masks as well as to entire menu structures.
If the operating terminal is fitted with parallel outputs, 8 function keys can be as-
signed to the outputs directly. The reaction time after pressing a key is approxi-
mately 30 ms. Before a function key signal is provided, the terminal debounces the
key, thereby ensuring that it has actually been 'pressed'.
In the programming system, the combination of direct selection and control can be
programmed for function keys and soft keys. Only the press codes of the keys
should be evaluated in this mode of operation. This is because, depending on the
length of time the key is pressed and the nature of the assigned mask, the stop code
may have already changed!
Direct selector keys are function keys which have been programmed to directly call
up a specific mask. Pressing this function key causes a new mask to be activated.
This change of mask is not possible if the data release has been requested (status
LED in the Data Release key is flashing or lights up) in a mask without automatic
data release.
With direct selector keys, a speedy and convenient operation can be obtained.
Section 4-10