Answer: After the machine stops due to idleness for a long time, the idle-for-long signal light comes on. At this time, the joint control host automatically switches to the running timer function to continue timing, but the joint control cabinet cannot start the machine, that is, when the system pressure is lower than the joint start pressure of the joint control cabinet, the machine cannot start, and can only be started by the pressure switch of the machine. Similarly, when the joint control host automatically switches to the running timer to rotate to the machine as the host, the machine cannot start. After the idle-for-long signal of the machine is eliminated, the joint control returns to normal.
