欧姆龙PLC模块维修常见故障：电源指示灯不亮，BF、SF灯亮，输出端没有输出，输入端不能控制，报错，程序错乱，不能通信等故障。
欧姆龙PLC维修：
CQM1~CQM1H系列PLC：
主机(CPU)
CQM1-CPU11 CQM1-CPU21 CQM1-CPU41
CQM1-CPU42 CQM1-CPU43 CQM1-CPU44
CQM1H-CPU11 CQM1H-CPU21 CQM1H-CPU51
CQM1-PA203 CQM1-PA206 CQM-PD026
各种模块维修:
CQM1-AD041 CQM1-DA021 CQM1-ID211
CQM1-ID212 CQM1-ID213 CQM1-OD211
CQM1-OD212 CQM1-OD213 CQM1-OC221
CQM1-OC222 CQM1-0A221 CQM1-SEN01
CQM1-IPS01 CQM1-IPS02 CQM1-TC001
CQM1-TC101 CQM1-TU001 CQM1-LK501
CQM1-ME04K CQM1-ME08K CQM1H-PLB21
CQM1H-CLK21 CQM1H-SCB41 CQM1H-MAB42 
C200H.C200H.CS1W 系列PLC
主机CPU维修:
C200H-CPU01 C200H-CPU02 C200H-CPU03
C200h-CPU11 C200H-CPU21 C200H-CPU31
C200HS-CPU01 C200HS-CPU21 C200HS-CPU31
C200HE-CPU11 C200HE-CPU32 C200HE-CPU42
C200HG-CPU33 C200HG-CPU43 C200HG-CPU53