Crash means that the industrial control computer cannot recover from a serious error, or there is a problem with the hardware, so that the industrial control computer crashes without response for a long time, that the industrial control computer cannot recover from a serious error, or there is a problem with the hardware, so that the industrial control computer crashes without response for a long time, that the industrial control computer cannot recover from a serious error, or there is a problem with the hardware, As a result, the industrial control computer did not respond for a long time