Sinumerik Alarm 12470 Channel %1 block %2 G function %3 is unknown
%1 = Channel number
%2 = Block number, label
%3 = Source string
With indirectly programmed G functions, an invalid or non-allowed group number has been programmed. Allowed group number = 1. and 5 max. number of G groups. In the displayed block, a non-defined G function has been programmed. Only “real” G functions are checked, which begin with the address G, e.g. G555. “Named” G functions such as CSPLINE, BRISK etc. are interpreted as subroutine names.
– 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. You should decide on the basis of the machine manufacturer’s programming guide whether or not the displayed G function exists or is available, or whether a standard G function has been reconfigured (or introduced by an OEM). Remove G function from the part program or program function call in accordance with the machine manufacturer’s programming guide.
Clear alarm with NC START or RESET key and continue the program.
- Siemens Diagnostics Guide by Siemens