AS-Interface function module for LOGO! — 4 virtual I/O points
The Siemens 3RK1400-0CE10-0AA2 is an AS-Interface function module built as a standard slave for the LOGO! controller family, offering 4 virtual inputs and 4 virtual outputs over the AS-i bus. Rated IP20, meaning it lives inside an enclosure — no washdown or outdoor exposure. Operating range is 0 to 55 °C, which covers most control cabinet conditions.
What the virtual I/O means on an AS-i line
The 4 inputs and 4 outputs are virtual — they exist as data points on the AS-Interface bus rather than as physical screw terminals. The module communicates those I/O states to the LOGO! over the AS-i cable, so the LOGO! sees them as local I/O without extra wiring back to the controller. Status is visible via a green/red dual LED on the module face — green indicates normal AS-i communication, red flags a fault or slave dropout.