What causes KUKA Robot alarm KRC0374?

Electrical noise or signal integrity degradation on the LSV2 communication cable due to EMI or poor shielding. Connection timeout or incomplete handshake during LSV2 procedure invocation causing protocol frame corruption. Firmware version mismatch between the KRC4 controller and a connected external device or interface module. Buffer overflow or stack corruption in the KRC4 software causing malformed LSV2 message construction. Hardware failure in the communication interface or transceiver preventing proper signal transmission and reception.

How do I fix KUKA Robot alarm KRC0374?

1. Record the exact sequence of operations and system state when the procedure error occurs to aid in reproducing the fault 2. Inspect all LSV2 communication cables for visible damage, loose connectors, or signs of electromagnetic interference exposure 3. Power cycle the KRC4 controller and all connected external devices using the main power disconnect, then restart in sequence 4. Verify that all connected devices are running the latest firmware versions compatible with the KRC4 software release using WorkVisual 5. Enable LSV2 protocol logging or diagnostics if available in the KRC4 system settings to capture detailed communication error information 6. Contact KUKA service and provide the diagnostic logs and reproduction steps, as procedure errors may indicate hardware-level communication faults requiring specialist repair

KUKA Robot codes

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KUKA Robot Controller

System · Basic

Alarm KRC0374

KUKA Robot KRC0374 - PROCEDURE ERROR

A data transmission error has occurred in the LSV2 protocol communication between the KRC4 controller and a connected device or subsystem that was not caught by the standard parity check mechanism. This indicates corrupted or malformed data in the procedure call that requires protocol-level diagnostics to identify and resolve.

KUKA RobotSystemBasic

KRC0374

KUKA Robot KRC0374 - PROCEDURE ERROR

PROCEDURE ERROR

Common Causes

Electrical noise or signal integrity degradation on the LSV2 communication cable due to EMI or poor shielding
Connection timeout or incomplete handshake during LSV2 procedure invocation causing protocol frame corruption
Firmware version mismatch between the KRC4 controller and a connected external device or interface module
Buffer overflow or stack corruption in the KRC4 software causing malformed LSV2 message construction
Hardware failure in the communication interface or transceiver preventing proper signal transmission and reception

Troubleshooting Steps

1Record the exact sequence of operations and system state when the procedure error occurs to aid in reproducing the fault
2Inspect all LSV2 communication cables for visible damage, loose connectors, or signs of electromagnetic interference exposure
3Power cycle the KRC4 controller and all connected external devices using the main power disconnect, then restart in sequence
4Verify that all connected devices are running the latest firmware versions compatible with the KRC4 software release using WorkVisual
5Enable LSV2 protocol logging or diagnostics if available in the KRC4 system settings to capture detailed communication error information
6Contact KUKA service and provide the diagnostic logs and reproduction steps, as procedure errors may indicate hardware-level communication faults requiring specialist repair

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