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B1-CM2
1個(gè)RS232(Port2)通訊擴(kuò)展模塊

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B1-CM5
1個(gè)RS485(Port2)通訊擴(kuò)展模塊

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B1-CM22
2個(gè)RS232(Port1+Port2)通訊擴(kuò)展模塊

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B1-CM25
1個(gè)RS232(Port1)+1個(gè)485(Port2)通訊擴(kuò)展模塊

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B1-CM55
2個(gè)RS485(Port1+Port2)通訊擴(kuò)展模塊

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