Sinumerik Alarm 12540 Channel %1 block %2 Block is too long or too complex
%1 = Channel number
%2 = Block number, label
The maximum internal block length after translator processing must not exceed 256 characters. After editing, for example, several macros in the block or a multiple nesting, this limit can be exceeded.
– Alarm display.
– Interface signals are set.
– Correction block
Press the NC Stop key and select the function “Correction block” with the soft key PROGRAM CORRECT. The correction pointer positions on the incorrect block. Divide up the program block into several sub blocks.
Clear alarm with NC START or RESET key and continue the program.
- Siemens Diagnostics Guide by Siemens