A control system for a 150 MeV FFAG accelerator complex in KURRI has been developed and served for actual commissioning of this accelerator complex with high reliability. This control system has been developed using simple and versatile tools such as PLCs, LabVIEW for MMI/DAQ systems, MySQL and Apache, and this can be a good example for small institutes without specialists on accelerator control. The design and development of our control system are reviewed from the perspective of developers without specialized experience on accelerator control. Also, the current status and applications of this control system are introduced.