# Input and Output Lines

The vision sensor supports the following pre-defined input and output lines:

Line | Signal Name | Signal Type | Notes
--- | --- | --- | ---
In 0 | Trigger | Pulsed | N/A
In 1 | Program change | Pulsed | 11–49 ms. For more information, see Change Program with Input Pulses.
Out 0 | Pass | Pulsed | Configurable between 5–1000 ms.
Out 1 | Fail | Pulsed | Configurable between 5–1000 ms.
Out 2 | Acquisition error | Pulsed | Configurable between 5–1000 ms.
Out 3 | Active | Level (High or Low) | High, if a trained program is loaded and outputs are enabled.