KUKA Robot codes
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KUKA Robot Controller

System · Basic

Alarm KRC0748

KUKA Robot KRC0748 - PREDEFINED SIGNAL EXPECTED 2084

This alarm indicates that a predefined signal (signal ID 2084) that was expected by the KRL program was not received or is missing. The robot's control system detected a mismatch between the signals the program anticipated and those actually available in the system configuration.

KUKA RobotSystemBasic

KRC0748

KUKA Robot KRC0748 - PREDEFINED SIGNAL EXPECTED 2084

PREDEFINED SIGNAL EXPECTED 2084

This alarm indicates that a predefined signal (signal ID 2084) that was expected by the KRL program was not received or is missing. The robot's control system detected a mismatch between the signals the program anticipated and those actually available in the system configuration.

Common Causes

  • Signal 2084 not configured in the robot's signal table or I/O mapping
  • Hardware connection failure or disconnection of the signal source device
  • Signal definition deleted or modified in the system configuration without updating the KRL program
  • Incorrect signal assignment or wrong signal ID referenced in the program logic
  • PLC or external device not communicating properly with the KRC controller

Troubleshooting Steps

  1. 1Verify that signal 2084 is properly defined in the robot's signal configuration (check $SIGNAL.SRC files and I/O mapping)
  2. 2Review the KRL program code to confirm the correct signal ID is being referenced and the signal declaration matches the configuration
  3. 3Check all hardware connections between the robot controller and external signal sources
  4. 4Compare the current system configuration with the program requirements and synchronize any discrepancies
  5. 5Restart the KRC controller and re-initialize all signal connections to establish proper communication
  6. 6If signal 2084 is no longer needed, update the KRL program to remove the reference or add the missing signal definition to the system configuration

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