Description
模块指示器变亮,输出设备不响应。那么,首先应检查保险丝或替换模块。若保险丝完好,替换的模块未能解决问题,则应检查现场接线。若根据编程设备监视器显示一个输出器被命令接通,但指示器关闭,则应替换模块。
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