Flexible System Control and Special-Purpose Languages

Dr. Dobb's Journal February 1998

By Russell W. Mello

 ...
# Open valve 1. Then wait for the pressure to go above 10 milli torr.
# The waitfor statement will poll PT3 until the comparison becomes
# true or the timeout value has been exceeded.
open V1;
waitfor PT3 > .010;
pt3_val = read PT3;
if pt3_val > .010 then
  print "The pressure at PT3 is above 10 millitorr";
else
  print "The pressure at PT3 is below 10 millitorr";
 ...

Example 2: Mvcl script with the waitfor statement.

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