Siemens SINUMERIK 840DE sl Commissioning Manual page 864

Generating user dialogs
1.11 Multitouch operation
<then>
</if>
</message>
...
...
146
<switch>
<condition>$message_par2</condition>
<case value="1">
<op>
pictindex = pictindex+1;
</op>
<if condition="pictindex > 3">
<then>
<op>
pictindex = 0;
</op>
</then>
</if>
</case>
<case value="-1">
<op>
pictindex = pictindex-1;
</op>
<if condition="pictindex < 0">
<then>
<op>
pictindex = 3;
</op>
</then>
</if>
</case>
</switch>
<op>
image_box_pict_name = image_box_list[$pictindex];
</op>
</then>
Programming Manual, 12/2017, 6FC5397-1DP40-6BA1
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