AH500 Module Manual After the master establishes the communication with the slave, the data in registers D of the master and slave for exchange are shown as the following table. 12.7 LED Indicator and Trouble-shooting AH10PFBM-5A provides 6 kinds of diagnosis methods such as the indicators, digital displays, registers in normal exchange area, ISPSoft software, registers in input area, SYCON.net software. 12.7.1 Indicators RUN LED RUN LED displays the status of PLC CPU on the left of AH10PFBM-5A. SYS LED SYS LED displays if the internal hardware or firmware of AH10PFBM-5A is normal.
12-52 Register in master PLC Value (Decimal) Data Register in slave PLC Value (Decimal) transmitted through PROFIBUS D6000 500 D300 500 D6001 501 D301 501 D6002 502 D302 502 D6003 503 D303 503 D6004 504 D600 504 D6005 505 D601 505 D1000 100 D200 100 D1001 101 D201 101 D1002 102 D202 102 D1003 103 D203 103 D1004 104 D500 104 D1005 105 D501 105 LED status Indication How to correct Green light on PLC is in RUN status. -- Off PLC is in STOP status. Turn the RUN/STOP switch of AH PLC to RUN or check if the hardware configuration in AH PLC is consistent with that in the actual rack.
LED status Indication How to correct Green light on After power on, the red light flickers once, which indicates the firmware is initializing and then green light is on constantly. -- Red light flickers The initializing of firmware in the master fails Contact the factory if the error still exists after re-powering 10PFBM. Red light on The initializing of firmware in the master fails Contact the factory if the error still exists after re-powering 10PFBM.