Save value of an expression
latch( saves the value of
x when the test step is entered and returns that value of
latch(x) statement reevaluates the next
time the step is entered.
Save the value of the torque in the variable
latch_val = latch(torque)
latch signal generation statements can be used in the Test
Sequence and Test Assessment blocks.
latch signal generation statements cannot be used in Stateflow® charts.