-3
Timeout - Device Not Reacting
Kuka · KR C4 PROFIBUS
What does -3 mean?
The device did not respond within the allocated timeout period (default 2 seconds) during a coupling or decoupling operation. This indicates a communication issue or the device being physically unavailable.
Common Causes
- Communication timeout waiting for device response.
- Target device failed to acknowledge communication request within expected timeframe.
- Intermittent network issues or device malfunction causing lost packets.
- Incorrect device configuration or power supply problems preventing response.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Check if the device is physically connected to the PROFIBUS line.
- 2
Verify the device's power supply voltage.
- 3
Increase the timeout time for device activation using the `ioCtl("SYS-X44_PB-Master1", &H8008, [timeout_ms])` command, specifying the timeout in milliseconds.
Verified technical data. Last updated: March 2026
Related Faults
Source: Kuka KR C4 PROFIBUS