代码 12581: [Channel %1: ] Block %2 invalid read access to %3 while in motion synchronous action

Parameters: %1 = Channel number %2 = Block number, label %3 = Source symbol Definitions: In a motion synchronous action, the displayed variable must not be entered as a variable that is to be read online, i.e. 1. The displayed variable must not be written to the left of the comparison in a motion synchronous action. Only selected variables are permi ssible, e.g. WHEN $AA_OVR == 100 DO.... 2. In a motion synchronous action, the displayed variable must not be used as a $$ variable, e.g. WHEN $AA_IM[X] >= $$P_AD[1] DO... DO $AC_VC = $$P_F 3. The displayed variable must not be programmed as an online evaluated parameter of a synchronous procedure, e.g. DO SYNFCT(1, $AC_PARAM[0], $SA_OSCILL_REVERSE_POS2[Z]) Reaction: Correction block is reorganized. Interface signals are set. Alarm display. Remedy: Modify program. Program Continuation: Clear alarm with NC ST ART or RESET key and continue the program.