SOMANET supports several Digital I/O which can be either used as GPIO or SPI SSI (single-ended), I²C, BiSS (single-ended).
Most Digital I/Os are configurable as either input or output independently if they are used as general purpose input/output (GPIO). This is done in object 0x2210.
Subitems 1-4 describe the available pins and can be configured with these values:
0 Disabled (default)
1 Input without pull-down
2 Input active high - a pull-down resistor will be activated
Select if Digital I/Os are input or output.