Nc marker operation procedures before the inspection check and confirm the power switch before operation. Confirm the terminal or the exposed electric parts without short circuit or to ground short circuit. Before input power makes all switches in the off state, ensure that when the input power, devices can't start and not an exception occurs. Before operation, please confirm that the machinery and equipment normal and not cause personal injury, the operator should warn, avoid personal and equipment damage. The safety operation in operation workflow: die after running to the line mechanic to the required marking procedure and start the line operation, after waiting for marking to end, marker return to zero, to complete a working cycle. Machine to start the body and limbs are not allowed to contact the machine moving parts, lest produce damage, maintenance equipment should be without electricity for parking. In the operation of the machine, operators should hold position, pay attention to the machine running status at any time, in case of emergency situations should be dealt with immediately, ensure the safe operation.