PLC module input point is fault

Time: 3/9/2017 6:31:35 AM

I use the PLC module input point module PLC module input point and the output is CJ2M, but the CJ1E input pint is broken down two times a year, both the same questions, that's all input point cannot work and no reaction in force input, the output is normal, so what's the cause?

1 input point cannot set to ON in the program
2 input points is burned, we suggest sending it to maintain and inspeect the reason

The input point of the hardware needs to be externally connected to the input signal

all input point cannot work？
how about COM connects OV and input 24V?
have a test to see if each is problem.
If it is really bad, then it is possible that your input into the high voltage or strong interference caused by the inspection of the input side of the power supply or replace the power to try