The 530 Series supports either linear bus (531 Series) or ring (532 Series) network architecture over long distance through one or two pair of singlemode or multimode fiber.

The 530 Series is a high performance Fiber Optic Multi-Drop Data Network System capable of interconnecting multiple devices fitted with RS-232 or RS-485. The Master Unit connected to a host computer can be placed at the end or in the middle of a pair of fiber optic cables with all the Slave Units daisy chained through the fiber optic cable. The optic signal from upstream and downstream are decoded and re-transmitted at each node. The anti-streaming function of the 530 Series can prevent failed remote units from blocking out the response channel. A second Master Unit can be placed at the other end of the optic cable as a backup master. In the event of cable breakage or equipment failure, the backup master can start polling the remote units from the opposite direction. The asynchronous data rate is up to 128kbps. Panel connectors are provided for data (DB9 connector) and fiber connection (ST-type for singlemode and multimode fibers). The 530 Series is easily monitored by LED indicators for power, optical link, and data channel activity. The standalone units are powered by +9 VDC. Due to its flexible design, the 530 Series is capable of addressing a variety of non-standard configurations.