xml学习笔记——1

<!--just for noting version -->
<?xml version="1.0" ?>     
<?xml version="1.0" encoding="utf-8"?>
<!-- loop of while -->
<WHILE times = "100" sleep = "1" >
<!--00 for highspeed bus,01 for low speed bus,02 for tcp/ip-->
<PORT>00</PORT>
<!--for HPNCMD-->
<HPNCMD>SIMPLE_SENSOR_READ</HPNCMD>
<SEND>
<!--send data locat here,-->
</SEND>
<!--define a variable and give it a init value-->
 <VAR dataByte="1">$OnOff=01</VAR>
 <!-- send UICMD basic type-->
  <SEND>
<CMD>SetUIEquipmentCmd</CMD>
<PARAM>01|$eqID|$OnOff|00|00|00|00|00|00|00</PARAM>
<!--body of water|system_ID|operation code|time setting...-->
</SEND>
<!-- calculate a variable,and print it on console-->
<CALC>$eqID=$eqID+1</CALC>
  <PRINT_VAR>$eqID</PRINT_VAR>


<!--If conditional statement if $eqID equals $maxeqID ,then excute the TRUE part,-->
<IF>
  <COND>
<COMP>
<DATA_INT>$eqID</DATA_INT>
<DATA_INT>$maxeqID</DATA_INT>
  </COMP>
  </COND>
  <TRUE>
<WHILE times = "2" sleep = "1"> </WHILE>
<BREAK>
<SEND>
<CMD>SetUIEquipmentCmd</CMD>
<PARAM>01|$eqID|$OnOff|00|00|00|00|00|00|00</PARAM>
</SEND>
</BREAK>
  </TRUE>
  <FALSE />
</IF>