1、关闭电源：在进行校线之前，需要先关闭控制柜的电源，并确保所有的电气元件都已经停止工作，以免造成事故。

1. Turn off power: Before conducting calibration, it is necessary to turn off the power supply of the control cabinet and ensure that all electrical components have stopped working to avoid safety accidents.

2、确定测量对象：根据需要，选定需要测量的电气元件和信号线路，例如电机、接触器、继电器等。

2. Determine the measurement object: Select the electrical components and signal circuits that need to be measured, such as motors, contactors, relays, etc., as needed.

3、连接万用表：将万用表的测量头与需要测量的电气元件和信号线路相连接，通常需要使用插头或者夹子等连接器，确保连接牢固。

3. Connecting a multimeter: Connect the measuring head of the multimeter to the electrical components and signal lines that need to be measured, usually using connectors such as plugs or clips to ensure a secure connection.

4、测量电压：打开电源，启动控制柜，测量相应电气元件和信号线路的电压值，根据测量值进行调整。

4. Measure voltage: Turn on the power, start the control cabinet, measure the voltage values of the corresponding electrical components and signal lines, and adjust according to the measured values.

5、校正电阻值：如果需要校正电气元件的电阻值，可以使用万用表进行测量，并根据测量值进行调整。

5. Correction of resistance value: If it is necessary to correct the resistance value of electrical components, a multimeter can be used for measurement and adjustments can be made based on the measurement value.

6、完成校线：根据需要进行多次测量和调整，直到达到预期的校线效果为止。

6. Complete calibration: Conduct multiple measurements and adjustments as needed until the expected calibration effect is achieved.

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