安全设备和安全区域的辨别。
对安全区域划分的纵向各层和横向各区配备专业的工业控制安全设备和软件进行安全防护，如图2所示。
The security zone is divided into vertical and horizontal sections with professional industrial control equipment and software security, as shown in figure 2.
现场设备层的车间从地理区域的角度进行划分，如车间1为一个安全区，车间2为一个安全区。
The workshop of the field equipment layer is divided from the Angle of the geographical area, such as the workshop 1 is a safe area, and the workshop 2 is a safe area.
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