5.2 Unit Test and Combination Test
Function test can be divided by scope into unit test and combination test.
• Unit test
The control applications such as its control logic and control loops are tested.
• Combination test
Including FCN-500 or FCN-RTU application graphics, displays and third-party
equipment/sub-systems, and communication functions.
Applications using programming languages such as Duolet function and VB (on
VDS) are also tested in combination test.
Function test normally begins with unit test and moves on to combination test after
control applications are checked.
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