7.5 Communication Function 3: PC(PLC) Link
7.5.1 PC(PLC) Link
Overview
• The PLC link is an economic way of linking PLCs of the FP-X, FPΣ and FP2-MCU, using a twisted-pair
cable.
• Data is shared between the PLCs using link relays (L) and link registers (LD).
• The statuses of the link relays and link registers of one PLC are automatically fed back to the other
PLCs on the same network.
• PC(PLC) link is not the default setting. Therefore, the setting of system register “COM1 Port setting”
communication mode no. 412 must be changed to “PC Link” in order to use this function.
• Unit numbers and link areas are allocated using the system registers.
• It is available with the COM1 port only.
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