GPIO Driver

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On the Linux operating system, GPIO is a set of flexible digital signals. The digital signals are usually provided by one or more GPIO Chip.

The Fernhill SCADA GPIO Driver allows you to associate I/O Data Point Digital tags with digital signals on a GPIO Chip.

Note: The GPIO Driver is only supported in the Linux version of Fernhill SCADA.

Fernhill SCADA GPIO Tags

The GPIO Driver provides these tag types:

Icon Tag Type Version Description
Microchip Icon GPIO Chip Tag 3.95 A connection to a GPIO Chip on a Linux operating system.

To configure Fernhill SCADA to communicate with data lines on a GPIO Chip, do the following:

  1. Create a GPIO Chip Tag.
  2. Create I/O Data Point Tags to represent the data lines in the GPIO Chip. For each I/O Data Point Tag you create:

Fernhill SCADA I/O Data Point Tags

You can use these I/O Data Point Tags to represent individual data lines on a GPIO Chip:

Icon Tag Type Version Description
Digital Data Point Tag I/O Digital Data Point Tag 3.12 Maps a Digital Data Point Tag to an external data source.

IOItemName Property

I/O Data Point Tags use the IOItemName property to define how the tag is mapped to the data source. In I/O Data Point Tags mapped to the SNMP Driver the IOItemName property is an ASN1 Object identifier.

To learn about what to put in this property, see GPIO Line Address Format.

Further Information

Fernhill SCADA Drivers

For information about other drivers available in Fernhill SCADA.


For the meaning of terms used in Fernhill SCADA.