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The PLC09 Arbitrator unit (Modbus port expander or multiplexer) permits communication to a PLC or other Modbus device from a single serial port to up to three separate host computers or terminals.
Command Buffering Messages may be buffered in the arbitrator until the entire message is complete before transmission; Separate independent baud rates supported on four serial ports (three host, one PLC); RTS control on Host 1 and PLC ports for half duplex operation or for server type devices that cannot control RTS
Baud Rates - 110, 300, 600, 1200, 2400, 4800, 9600, and 19200; Configurable thru Host 1 port; ASCII and RTU protocols can be intermixed on the three host ports; Configuration software included; LED activity indicator
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