If using a card such as the Model 7013 Relay Switch card, ch. 2 is normally energized.

如果采用类似7013型继电器开关卡这样的开关卡，通道2通常是加激励的。

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If using a card such as the Model 7013 Relay Switch card, ch. 2 is normally energized.

如果采用类似7013型继电器开关卡这样的开关卡，通道2通常是加激励的。

youdao