这些功能模块可选择带 AS-i 或 IO-Link 接口，大大简化控制回路接线。在安全应用方面，3RT2 系列还提供一些新功能，比如使用安全连接模块可组装成符合 IS 标准 PLe 或者 IEC62061 标准 SIL3 的接触器组合。
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