Ch a pt er 9 T ro u bl es h oo t in g9 - 79_Mode LED indicator DescriptionSYSTEMSystem status of the CPU moduleON: The external input/output is forced ON/OFF.OFF: The system is in the default status.Blinking: The CPU module is being reset./The retained values in the devices are beingcleared .ModuleRUNOperating status of the motion CPU functioning as a motion moduleON: The user program is being executed.OFF: The execution of the user program stops.Blinking: The motion module runs in debug mode.ERRORError status of the motion CPU functioning as a motion moduleON: A serious error occurs in the module.OFF: The system is normal.Blinking: A slight error occurs in the module.9.2.1. AHxxEMC-5AAfter a program is written into an AH Motion Controller series CPU, the ERROR LED indicator will blink and an error flagwill be ON if an error occurs in main program or amotion subroutine. The reason for the error occurring in the mainprogram or amotion subroutine may be that the use of operands (devices) is incorrect, syntax is incorrect, or the setting ofmotion parameters is incorrect. You can know the reasons for the errors occurring in an AH Motion Controller series CPUby means of the error codes (hexadecimal codes) stored in error registers. Error flags and registers:SM*: Special auxiliary relaySR*: Special data registerProgram error Motion errorPOU mn=10~41(10: 1 st axis; 41: 32 nd axis)Error flag - AMmn49Operation error SM0 -The operation error is locked SM1 -Syntax (Instruction/Operand)check error SM5 -Operation error code SR0 -Operation error address(step) SR1/SR2 -Syntax check error code SR4 ARmn41Syntax check error address(step) SR5/SR6 -
