7-747.6.4 Connection Example of PC(PLC) linkWhen using three PLCsThe following example demonstrates how the PLC can be connected to two other FPΣ PLCs using aPC(PLC) link connection. In the example shown here, link relays are use. When X1 of control unit no. 1turns on, Y1 of unit no. 2 turns on. When X2 of unit no. 1 turns on, Y1 of unit no. 3 turns on.System register settingsWhen using a PC(PLC) link, the communication format and baud rate are fixed.No. Name Set ValueNo. 413 Communication format for COM1portData length: ……Parity check: …..Stop bit: …………Terminator: ……..Header: …………8 bitsOdd1 bitCRNo STXNo. 415 Baud rate setting for COM1 port 115200 bpsNote) The baud rate of the AFPG806 must be identically set to 115200 bps by the system register andthe dip switch located in the communication cassette.Reference: <7.1.4 Setting of AFPG806 Switch>.Unit no. and communication mode settings- Setting for unit no. 1No. Name Set valueNo. 410 COM1 port unit no. 1No. 412 COM1 port selection of communication mode PC(PLC) link- Setting for unit no. 2No. Name Set valueNo. 410 COM1 port unit no. 2No. 412 COM1 port selection of communication mode PC(PLC) link- Setting for unit no. 3No. Name Set valueNo. 410 COM1 port unit no. 3No. 412 COM1 port selection of communication mode PC(PLC) linkKey Point:Make sure the same unit number is not used for more than one of the PLCs connected through thePC(PLC) link function.
