Đại lý module ABB CPU Clock Frequency Memory (RAM) Available RAM CPU Redundancy Support Interfaces ABB PM851A 24 MHz 8 MB 2.787 MB No 1 Ethernet port 2 RS-232C ports ABB PM856A 24 MHz 8 MB 2.787 MB No 2 Ethernet port 2 RS-232C ports ABB PM860A 48 MHz 8 …
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