宏代码如下。 
macro_command main() 
short nMin,nMax,nResult 
GetData(nMin, "Local HMI", LW, 0, 1) 
GetData(nMax, "Local HMI", LW, 1, 1) 
// 
short nRand=0 
RAND(nRand) 
nResult = nRand%(nMax-nMin)+nMin 
SetData(nResult, "Local HMI", LW, 2, 1) 
end macro_command 
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