This paper presents how test systems could be implemented in order to lower the investment cost, increase the test throughput, and scale with future requirements. In order to achieve all this, the test system architectures are based on modular, virtual instrumentation reconfigurable levels, which provide the code and equipment reuse for different test scenarios. The example shown points out the modular test architecture's layers that are used when testing the functionality of the compact FieldPoint 2020 controller. A more detailed approach is offered to the implementation of the test applications and to the automated test sequence.