Serial Cards

Serial Cards

Our serial cards provide dependable RS-232, RS-422 and RS-485 connectivity for industrial computers that need to interface with legacy equipment, PLCs, sensors, meters and serial devices. We supply PCI, PCIe, CompactPCI and PC/104 serial expansion cards in a wide range of port counts, with options including surge protection, isolation and synchronous or asynchronous communication for demanding industrial environments.

If you need advice on serial interface type, port count or system compatibility, our team can help you choose the right card for your application.

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The right interface depends on the device you need to connect and the way the data will be transmitted. RS-232 is often used for straightforward point-to-point connections, while RS-422 and RS-485 are typically better suited to longer runs or more noise-prone industrial environments. If your system needs to connect to PLCs, sensors, meters or other legacy serial equipment, checking the interface requirement first is usually the best starting point.

That depends on how many devices the system needs to support now and whether future expansion is likely. Serial cards in our range are available in port counts from 1 up to 16, so it often makes sense to choose a card that covers current requirements without leaving the system too limited if additional equipment is added later.

Yes. Many industrial applications still rely on serial communication for connecting legacy equipment, PLCs, sensors, meters and specialist devices. Adding a serial card can be a practical way to maintain compatibility with installed hardware without redesigning the wider system around a different interface.

Most industrial serial applications use asynchronous communication, which suits many common devices and control systems. Some applications have more specialist communication requirements, so synchronous-capable cards are also available where the protocol or connected equipment calls for it. The right choice depends on the communications method required by the device you are connecting.

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