Sinumerik Alarm 17240 Channel %1 block %2 illegal tool definition
%1 = Channel number %2 = Block number, label
If an attempt is made to modify a tool data that would subsequently damage the data consistency or lead to a conflicting definition, this alarm will appear.
– Alarm display.
– Interface signals are set.
– Correction block is reorganized.
Correct the NC program.
Clear alarm with NC START or RESET key and continue the program.
- Siemens Diagnostics Guide by Siemens