What causes KUKA Robot alarm KRC0378?

Multiple WorkVisual or external applications initiating simultaneous file transfers to the KRC4 controller. Unfinished transfer processes remaining in the queue due to network interruption or timeout. Custom KRL programs using excessive parallel COPY or TRANSFER commands without proper synchronization. Concurrent RCP client connections attempting to upload or download modules simultaneously. Automatic synchronization tools triggering multiple transfers without respecting the 4-process limit.

How do I fix KUKA Robot alarm KRC0378?

1. Verify the number of active RCP connections using KUKA smartPAD diagnostics or network monitoring tools 2. Terminate any inactive transfer processes by closing unused WorkVisual windows or KRL communication channels 3. Wait for all current transfers to complete before initiating new file operations, monitoring the transfer queue status 4. Reduce the number of concurrent client applications accessing the KRC4 system and establish a sequential transfer protocol 5. Review KRL programs for inefficient COPY or TRANSFER command usage and refactor to respect the 4-process limitation 6. Restart the KRC4 controller if transfer processes appear stuck in queue and cannot be cleared through normal cancellation

KUKA Robot codes

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KUKA Robot Controller

Communication · Basic

Alarm KRC0378

KUKA Robot KRC0378 - RCP SWITCH POSITION INADMISSIBLE

This alarm indicates that the RCP (Remote Control Protocol) interface has attempted to initiate more than the maximum allowed concurrent transfer processes. The KUKA system enforces a limit of 4 simultaneous transfer operations to maintain system stability and prevent resource exhaustion on the controller.

KUKA RobotCommunicationBasic

KRC0378

KUKA Robot KRC0378 - RCP SWITCH POSITION INADMISSIBLE

RCP SWITCH POSITION INADMISSIBLE

Common Causes

Multiple WorkVisual or external applications initiating simultaneous file transfers to the KRC4 controller
Unfinished transfer processes remaining in the queue due to network interruption or timeout
Custom KRL programs using excessive parallel COPY or TRANSFER commands without proper synchronization
Concurrent RCP client connections attempting to upload or download modules simultaneously
Automatic synchronization tools triggering multiple transfers without respecting the 4-process limit

Troubleshooting Steps

1Verify the number of active RCP connections using KUKA smartPAD diagnostics or network monitoring tools
2Terminate any inactive transfer processes by closing unused WorkVisual windows or KRL communication channels
3Wait for all current transfers to complete before initiating new file operations, monitoring the transfer queue status
4Reduce the number of concurrent client applications accessing the KRC4 system and establish a sequential transfer protocol
5Review KRL programs for inefficient COPY or TRANSFER command usage and refactor to respect the 4-process limitation
6Restart the KRC4 controller if transfer processes appear stuck in queue and cannot be cleared through normal cancellation

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