SW485C port-powered converters change TD and RD RS-232 lines to RS-485/422signals. SW485C port-powered converters change TD and RD ... delay automatic transmit Standard Accord EIA RS-232, RS-485, RS-422 standard RS-232 signal TX, RX, GND RS-485 signal D+, D-, GND ... power supply needed, powered from TXD, RTS, DTR signal in RS-232 port Consumption Static consumption less than 15mA, dynamic consumption ...