I/O Instances deliver data from devices or sources outside of IP Symcon and make it available. These often form the first interface to the physical device.
When creating a device instance, which requires an I/O instance as a parent instance, the appropriate instance is often created and set up automatically.
Only the settings need to be checked.
An I/O instance can also be inserted if required. This is often used in combination with a RegisterVariable, which has additional values available via System Variables.
I/O instances are also used in PHP Module Development. Similar to native modules, I/O instances are inserted there as an interface.