6ES7 412-1XF02-0AB0 | SIEMENS CENTRAL PROCESSING UNIT

SIMATIC S7-400, CPU 412-1 CENTRAL PROCESSING UNIT WITH: MULTI-POINT MPI INTERFACE, 48 KB WORKING MEMORYWith the STEP 7 function “single step mode,” the CPU requires more time than the execution time for the instruction. As a result of the scan cycle time monitoring, it is possible that the CPU may go into STOP mode because the cycle time was exceeded. You can avoid this by calling the SFC43 “RE_TRIGR” in the time error organization block (OB80).If you have set a breakpoint at a jump instruction or a block end instruction and the CPU has reached this instruction, neither the function “execute next statement” nor the function “execute call” can be executed. Instead the error message “D063: Resource error: the trigger event is occupied” is displayed.If you have set a breakpoint at a UC or CC instruction and the CPU has reached this instruction, the function “execute call” cannot be executed. Instead the error message “D063: Resource error: the trigger event is occupied” is displayed. Remedy: Delete the current breakpoint or move it to the previous command line.