FC18 function not possible

What does 22297 mean?

This alarm indicates that a function request made by the PLC via the FC18 interface could not be executed. The alarm message includes a specific error code (e.g., 5 for switchover not possible, 23 for MD 30132 IS_VIRTUAL_AX set) that specifies the exact reason for the failure. This prevents NC Start in the affected channel, leading to production halts and potential process inconsistencies if the function is critical.

Complete Troubleshooting Guide

1. 1

   Identify the specific error code (%3) from the alarm message for detailed diagnosis of the root cause.

2. 2

   Address conflicts related to axis switchover (Error codes 5, 6), ensuring the axis is in the correct mode before attempting the FC18 function.

3. 3

   Verify the machine data setting MD 30132 IS_VIRTUAL_AX if error code 23 is displayed, ensuring it's not incorrectly set for a virtual axis.

4. 4

   Clear the alarm using the Delete key or NC START.