Sinumerik Alarm 12420 Channel %1 block %2 identifier %3 too long

Sinumerik Alarm 12420 Channel %1 block %2 identifier %3 too long

Parameters:
%1 = Channel number
%2 = Block number, label

Definitions:
The symbol to be defined or the specified jump target has a name which is longer than the 32 characters allowed.

Reactions:
– Alarm display.
– Interface signals are set.
– Correction block

Remedy:
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. The symbol to be created or the target of program jumps (label) must conform to the system specifications, that means the name must begin with 2 letters (but the 1st sign must not be “§”) and may be up to a maximum of 32 characters.

Program Continuation:
Clear alarm with NC START or RESET key and continue the program.