红外安全光幕是一种区域防护技术。

Infrared light curtain is applied to area security.

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安全光应该固定在桌上四英尺处。

The safe-light should be fixed four feet above the table.

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整个系统采用了SLC500可编程控制器、触摸屏、安全光幕控制器等控制部件，为机床提供了安全可靠的装配质量保证。

The whole system adopts control components such as SLC500 programmable controller, touch screen, safety light curtain etc. Then safety and reliable assembly quality is ensured.

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