KUKA Robot codes
AxisMD

axismd.ai

KUKA Robot Controller

System · Basic

Alarm KRC0666

KUKA Robot KRC0666 - BINARY OUTPUT SIGNAL EXPECTED 2002

This alarm indicates that a binary output signal was expected but not received or properly configured in the I/O interface. The system encountered an issue while attempting to access or verify a digital output that should be available on the specified port or module.

KUKA RobotSystemBasic

KRC0666

KUKA Robot KRC0666 - BINARY OUTPUT SIGNAL EXPECTED 2002

BINARY OUTPUT SIGNAL EXPECTED 2002

This alarm indicates that a binary output signal was expected but not received or properly configured in the I/O interface. The system encountered an issue while attempting to access or verify a digital output that should be available on the specified port or module.

Common Causes

  • Digital output port or module not properly configured in the hardware setup
  • Missing or disconnected I/O card or terminal block for binary outputs
  • Incorrect signal assignment in the KRL program or system configuration
  • Hardware failure or communication loss with the I/O module
  • Binary output signal definition mismatch between software configuration and actual hardware

Troubleshooting Steps

  1. 1Verify the digital output module is properly installed and connected to the control cabinet
  2. 2Check the hardware configuration in KUKA.Workvisual to confirm all I/O modules are correctly mapped
  3. 3Review the KRL program to ensure binary output signals are correctly declared and assigned to valid I/O points
  4. 4Confirm the signal name and address match between the program and the system configuration file
  5. 5Perform a hardware reset and power cycle of the robot controller to reinitialize I/O communication
  6. 6If the issue persists, consult the wiring diagram and test the specific I/O module with diagnostic tools

Seeing Multiple Alarms?

Seeing another alarm with this one? Enter the code.

Get machine-aware diagnosis

AxisMD logs alarms against your actual machines, tracks patterns, and gives AI context your manual doesn't have.

Start free

Was this guide helpful?

Always verify with your machine manual or a certified technician before performing service procedures.