What Are Diagnostic Codes?

On-line diagnosis is the diagnosis during operation. After the system enters the running state by starting the diagnosis, the internal diagnostic program automatically detects and diagnoses the CNC itself, external equipment connected to the CNC, the servo unit, and the servo motor. As long as the system is powered on, online diagnostics will not stop. Ordinary NC systems have bred the buds for diagnostics during operation, such as horizontal and vertical parity checks during paper tape input, non-command code checks, and so on. In addition, there are measures such as over-limit alarms. It is more convenient to do these tasks in the CNC system, and with the software support, the scope of diagnosis is even greater. You can also use a typewriter or CRT to indicate the diagnosis results of various items and the fault location indicated by a uniform number.

Online diagnosis

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On-line diagnosis is the diagnosis during operation. After the system enters the running state by starting the diagnosis, the internal diagnostic program automatically detects and diagnoses the CNC itself, the external equipment connected to the CNC, the servo unit, and the servo motor. As long as the system is powered on, online diagnostics will not stop. Ordinary NC systems have bred the buds for diagnostics during operation, such as horizontal and vertical parity checks during paper tape input, non-command code checks, and so on. In addition, there are measures such as over-limit alarms. It is more convenient to do these tasks in the CNC system, and with the software support, the scope of diagnosis is even greater. You can also use a typewriter or CRT to indicate the diagnosis results of various items and the fault location indicated by a uniform number.

Chinese name

Online diagnosis

Pinyin

zai xian zhen duan

Condition

Have electricity

Hand segment

Check memory with "code and"

The procedures for diagnosis during operation are relatively fragmented, and are often included in the main control program and interrupt handler branches. The following describes several methods for diagnosis during operation. ^[1]

The CNC will arbitrate the fault information that appears at the same time and deal with it accordingly. For example, a servo failure is an emergency and has the highest priority. The response of the CNC system to the servo failure is often to immediately stop the processing and put the system into an emergency stop state. CNC system diagnostic display information is generally hundreds of pieces, a machining center with a tool magazine and a workbench diagnostic display information is more than 500 pieces. The CNC manufacturer divides the diagnostic information into several categories, such as: programming / setting: fault alarms caused by operating errors; servo: fault alarms related to servo systems and motors; stroke switch alarms; circuit board connection failure; Overheating alarm; Memory alarm; System alarm and so on.

The above types of information are subdivided into several or even hundreds of specific fault contents, and the list is provided in the manual. When a fault occurs, each item is assigned a fault number (called an alarm number) with a concise sentence and displayed on the CRT.