如果一个端口配置COMM_ REQ被发送到-一个串口，通常该串口有一个SNP主设备(例如，程序器)与之连接，COMM_ REQ功能回送–个错误代码到COMM_ REQ状态字。发送另-一个COMM R到相同的端口发送一个COMM_ _REQ来配置–个串口后
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Allen Bradley, 500L-BOD93, AC Contactor, #3081
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Allen Bradley Circuit Board 74102-343-51, 74102-342-05A..?.
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SCI Injection Molding Circuit Board 21648 Rev. B #365
SCI Injection Molding Circuit Board 21648 Rev. B #365
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Cutler Hammer C0250E3CFBNXXRT Ctrl Transfomer #10630
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Siemens/Van Dorn Output Module 6ES5 454-7LA11 #33426
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