General
Number of serial interfaces	8

The Moxa Connection Box OPT8B is a compact connection box specifically designed for connecting up to eight RS-232 devices to a serial expansion card. It serves as an interface adapter in industrial environments where stable and reliable serial communication is required. The device enables connection of devices via a DB25 male connector, making it suitable for applications where multiple serial end devices need to be connected to a central system.

Applications

The OPT8B is suitable for use in industrial plants, such as in manufacturing automation, building automation, or process control. It is typically used in combination with serial expansion cards in computers or control systems to increase the number of available serial ports. The robust construction and clear signal indication make it suitable for environments with high mechanical or electrical stress.

Functions and Equipment in Detail

The connection box features eight serial interfaces, each equipped with LED indicators for TxD (Transmit Data) and RxD (Receive Data). These indicators enable visual monitoring of data transmission and assist in troubleshooting. The serial interfaces support baud rates from 50 bps to 921.6 kbps, ensuring broad compatibility with various serial devices. The device-side interface is implemented as DB25 male, representing a standard connection in many industrial systems.

Technology Explained Simply

The OPT8B functions as a mechanical and electrical intermediate link between a serial expansion card (e.g., with DB62 or VHDCI-68 socket) and the connected RS-232 devices. The integrated connection cable (1.5 m long) ensures a direct electrical connection. The LED indicators signal whether data is being transmitted (TxD) or received (RxD), which is helpful for diagnosing communication issues. The compact and robust design ensures reliable operation in industrial environments.

Compatibility and Accessories

The OPT8B is compatible with serial expansion cards featuring a DB62 or VHDCI-68 socket. The connection is made via the included 1.5 m cable, which is configured according to the expansion card (DB62 to DB62 or VHDCI 68 to DB62). The connection box is part of Moxa’s OPT8 series and can be combined with other models in the series to achieve different interface configurations.

Mounting and Installation

Installation is performed by directly connecting the connection box to the serial expansion card using the included cable. Devices are connected to the DB25 male connectors. The compact design allows for flexible placement, for example in enclosures or on walls. No additional tools or mounting accessories are required.

Advantages in Operation

The OPT8B provides a reliable and simple way to connect multiple RS-232 devices to a system. The LED indicators facilitate monitoring and troubleshooting. The robust construction and standard interface (DB25 male) ensure high compatibility and longevity in industrial applications. The integrated cable connection reduces the number of required connectors and decreases susceptibility to errors.

The connection box is delivered with a single unit as specified in the product description. The warranty is one year from the date of delivery.