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Definitions of Signals and Direction
Page 32
Definitions of Signals and Direction
EIA-232 Direction Description
RI In Ring Indicator
DCD In Data Carrier Detect
RTS Out Request To Send
DSR In Data Set Ready
TXD Out Transmit Data
RXD In Receive Data
S-GND Signal Ground
CTS In Clear to Send
DTR Out Data Terminal Ready
C-GND Chassis Ground