When you are sick, you can find out what disease you have by looking, hearing, asking, and understanding the four methods. In this way, you can prescribe the right medicine. Only when you find the real disease can you get rid of it. In fact, the same is true for objects that have problems.

When the plastic drag chain encounters problems, the following methods can be used to eliminate them:

1. Parameter inspection method: In case of failure, the system parameters should be checked in time. The parameters are generally stored in the bubble memory or in the CMOS RAM that needs to be kept by the battery. Once the battery is insufficient or due to external interference and other factors, the individual parameters of the plastic drag chain are lost or changed, causing confusion, making the machine tool unable to work normally. At this time, the fault can be eliminated by checking and correcting the parameters.

2. Visual inspection method: This method is the first method used by maintenance personnel, that is, during fault diagnosis, observe and inspect one by one from outside to inside. Attention should be paid to whether there are missing parts.

3. Probing exchange method: that is, when the approximate cause of the fault is analyzed, the maintenance personnel can use the spare printed circuit board, integrated circuit chip or components to replace the doubtful part, thus reducing the fault range of the plastic drag chain to the level of printed circuit board or chip.

4. Function test method: The function program test method is to program the G, M, S, T, F functions of the NC system into a function test program and store it on the corresponding media, such as paper tape and magnetic tape. Running this program during the fault diagnosis of the plastic drag chain can quickly determine the possible cause of the fault.