| 摘要 |
FIELD: information technology. ^ SUBSTANCE: first message is sent from a programmable logic controller (PLC) to a module, said first message is transmitted via a first 8B/10B encoded frame that comprises a destination address corresponding to an eight bit default module address of said module, said first message is adapted to set a module address of said module to an assigned address value and transmit a reply message via a second 8B/10B encoded frame that comprises a source address that confirms said assigned address value has been assigned to said module by said first message, said first 8B/10B encoded frame comprising a message type field of a size that corresponds to eight bits. ^ EFFECT: high reliability of control system owing to prevention of errors arising from failure of equipment or data transmission errors. ^ 14 cl, 12 dwg, 4 tbl |
