Siemens SINUMERIK 808D ADVANCED Commissioning Manual page 320

Tag identifier
TYPEDEF Continued
WAITING
WHILE
320
Meaning
Some predefined functions expect variables of structure type RECT, POINT, or SIZE as
the call parameter. These structures are defined in the file struct_def.xml.
RECT:
<typedef name="StructRect" type="struct" >
<element name="left" type="int">0</element>
<element name="top" type="int">0</element>
<element name="right" type="int">0</element>
<element name="bottom" type="int">0</element>
</typedef>
POINT:
<typedef name="StructPoint" type="struct" >
<element name="x" type="int">0</element>
<element name="y" type="int">0</element>
</typedef>
SIZE:
<typedef name="StructSize" type="struct" >
<element name="width" type="int">0</element>
<element name="height" type="int">0</element>
</typedef>
The tag waits for the component to undergo a hot restart after an NC or drive reset.
Attributes:
WAITINGFORNC = "TRUE" - the system waits for the NC to restart
•
Syntax:
<WAITING WAITINGFORNC = "TRUE"/>
Example:
...
<CONTROL_RESET resetnc = "true"/>
<WAITING waitingfornc = "true"/>
...
WHILE loop
WHILE (Test)
Instruction
Syntax:
<WHILE>
<CONDITION>...</CONDITION>
Instructions
...
</WHILE>
The While loop executes a sequence of instructions repeatedly while a condition is met.
This condition is tested before the sequence of instructions is executed.
Example:
<WHILE>
<CONDITION> "plc/ib9" == 0 </CONDITION>
<DATA name = "PLC/qb11"> 15 </DATA>
</WHILE>
Commissioning Manual
01/2017