... converters change TD and RD RS-232 lines to RS-485/422signals. SW485C port-powered converters change ... /422 interface adopt beforhand aggravatedesign, extend RS232 signal to 6000 feet at 115200Bps 1, Plug and play, ... also worked on 3 lines 3, RS232 to RS485 or RS232 to RS422 4, Lowest consumption 5, Automatic send ... R+, R-, T+, T-, GND Asynchronism,point to point or multi point, 2 wire half-duplex, 4 wire ...