# Self-Diagnosis and Error Codes The SENSORswitch includes the following diagnosis features: - **Self-Test**: When triggered by the respective IO-Link System Command: - The capacitive measurement circuit is checked (duration: 200 ms) - The RGB LED is checked electrically - **Monitoring** of Supply Voltage and MCU Temperature - **Output Overload Detection** Detected errors are indicated via IO-Link Events and/or in the **Error Code** IO-Link Parameter, as well as by blinking patterns of the LED. ## Error Codes

Blink Code	IO-Link Error Code	Description
1	0x0001	Internal error
5	0x0010	Sensor error (self-test)
8	0x0080	Memory error
12	0x0800	LED error (self-test)
13	0x1000	Overload error on digital output

## Revision History ### Rev. A – 2024-02-13 - Based on Technical Reference Manual CANEO series10 – Firmware V9.x, revision B - Added tables to illustrate order of Process Data - Added parameter size in bytes to IO-Link ISDU table - Changed description of self-test