Sinumerik Alarm 16420 Channel %1 block %2 axis %3 programmed repeatedly
%1 = Channel number
%2 = Block number, label
%3 = Axis name, spindle number
It is not allowed to program an axis more than once.
– Alarm display.
– Interface signals are set.
– Correction block is reorganized.
Delete the axis addresses that have been programmed more than once.
Clear alarm with NC START or RESET key and continue the program.
- Siemens Diagnostics Guide by Siemens