What causes KUKA Robot alarm KRC0971?

Analog input variable declared with incorrect data type (e.g., BOOL instead of REAL or INT). I/O port assignment mismatch between hardware configuration and KRL program declaration. Corrupted or missing analog input hardware module configuration file. Analog input channel not properly configured in the IO.xml or hardware configuration. KRL program referencing an analog input that was deleted or renamed in the I/O configuration.

How do I fix KUKA Robot alarm KRC0971?

1. Verify the data type of the analog input variable in the KRL program matches the hardware configuration (typically REAL for 4-20mA or 0-10V signals) 2. Cross-reference the I/O port assignment in the program with the KRC configuration file (IO.xml) to ensure consistency 3. Check the KUKA System Software startup log for related I/O configuration errors or warnings 4. Reload the I/O configuration in the System parameters to refresh all analog input definitions 5. If using a custom module or function, verify that the @P1@ parameter is correctly defined as an analog input in both the declaration and usage 6. Power cycle the robot controller and reinitialize the I/O system to clear any cached configuration conflicts

KUKA Robot codes

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KUKA Robot Controller

System · Basic

Alarm KRC0971

KUKA Robot KRC0971 - ANALOG INPUT EXPECTED 2308

This alarm indicates that the KUKA control system expected an analog input signal at a specified I/O point but the data type or signal format does not match the expected analog input configuration. The system detected a mismatch between the declared analog input variable and the actual hardware I/O assignment or data type in the robot controller.

KUKA RobotSystemBasic

KRC0971

KUKA Robot KRC0971 - ANALOG INPUT EXPECTED 2308

ANALOG INPUT EXPECTED 2308

Common Causes

Analog input variable declared with incorrect data type (e.g., BOOL instead of REAL or INT)
I/O port assignment mismatch between hardware configuration and KRL program declaration
Corrupted or missing analog input hardware module configuration file
Analog input channel not properly configured in the IO.xml or hardware configuration
KRL program referencing an analog input that was deleted or renamed in the I/O configuration

Troubleshooting Steps

1Verify the data type of the analog input variable in the KRL program matches the hardware configuration (typically REAL for 4-20mA or 0-10V signals)
2Cross-reference the I/O port assignment in the program with the KRC configuration file (IO.xml) to ensure consistency
3Check the KUKA System Software startup log for related I/O configuration errors or warnings
4Reload the I/O configuration in the System parameters to refresh all analog input definitions
5If using a custom module or function, verify that the @P1@ parameter is correctly defined as an analog input in both the declaration and usage
6Power cycle the robot controller and reinitialize the I/O system to clear any cached configuration conflicts

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