This standard refers to the international standard ISO 8867-88. This standard specifies the physical interface and communication protocol for transmitting data in a serial asynchronous manner. It supports full-duplex or half-duplex communication methods. This standard applies to point-to-point communication between the factory main computer and computer-controlled automation equipment. This standard corresponds to the physical layer (first layer) and link layer (second layer) of GB 9387 (ISO 7498) Open Systems Interconnection-Basic Reference Model. JB/T 5755-1991 Industrial asynchronous communication data link layer and physical layer JB/T5755-1991 standard download and decompression password: www.bzxz.net

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