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The Ethernet and field-bus communications are used in the machine control system(MCS) of HL-2A. The control net, with a programmable logic controller (PLC) as its logic controlmaster, an engineering control management station as its net server, and a timing control PCconnected to a number of terminals, flexibly and freely transfers information among the nodeson it with the Ethernet transmission techniques. The PLC masters the field bus, which carriessmall pieces of information between PLC and the field sites reliably and quickly. The control netis connected into the data net, where Internet access and sharing of more experimental data areenabled. The communication in the MCS guarantees the digitalization, automation and central-ization. Also provided are a satisfactory degree of safety, reliability, stability, expandability andflexibility for maintenance.
The Ethernet and field-bus communications are used in the machine control system (MCS) of HL-2A. The control net, with a programmable logic controller (PLC) as its logic controlmaster, an engineering control management station as its net server, and The PLC controls the field bus, which carriessmall pieces of information between PLC and the field sites securely and quickly. The control netis connected into the data net, where Internet access and sharing of more experimental data areenabled. The communication in the MCS guarantees the digitalization, automation and central-ization. Also provided a satisfactory degree of safety, reliability, stability, expandability and flexibility for maintenance.