Sinumerik Alarm 12587 Channel %1 block %2 motion synchronous action: operation/function %3 not allowed

Sinumerik Alarm 12587 Channel %1 block %2 motion synchronous action: operation/function %3 not allowed

Parameters:
%1 = Channel number
%2 = Block number
%3 = Operator/function

Definitions:
The specified function / operator is not permissible for logic operations of real-time variables in motion synchronous actions. The following operators/functions are permissible:
• == >= < + – * /
•DIV MOD
• AND OR XOR NOT
• B_AND B_OR B_XOR B_NOT
• SIN COS TAN ATAN2 SQRT POT TRUNC ROUND ABS EXP LNX SPI

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

Remedy:
Modify part program.

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