Diagnostics
For diagnostic purposes, you can read various internal information from the CoE directory. See chapter Information objects.
Interpretation of the values in object 0xF915 "LED Status"
The status of the optical displays (LEDs) in the device can be read out electronically in CoE 0xF915 LED Status, e.g. for simultaneous LED display in the visualization.
These are four bytes that describe the RGB value and the light status:

- Byte 1 (from left to right): Flashing/lighting code
- 0x00: Off/ not available
- 0x01…0x14: 1..20 Hz
- 0x80: EtherCAT PreOp
- 0x81: EtherCAT SafeOp
- 0x82: EtherCAT Boot
- 0xFF: On/ available
- Byte 2..4:
- 0x00: Off
- 0xFF: On
Examples:
- 0x 00 00 00 00: LED not present
- 0x FF 00 00 00 : LED is on, RGB =0, i.e. not illuminated, meaning: LED is present
