Eia (Rs-232C) Signals - Panasonic KX-TVS100 Quick Installation Manual

EIA (RS-232C) S
IGNALS
Frame Ground (FG)
Connects to the unit frame an external ground, usually the ground pin of the AC power cord.
Transmitted Data (TXD)—output
Conveys signals from the unit to the terminal/printer. A "mark" condition is held unless data or BREAK
signals are being transmitted.
Received Data (RXD)—input
Conveys signals from the terminal/printer to the unit.
Request To Send (RTS)—output
Sets the modem to originate so that it can send; this lead is held on whenever DSR
is on.
Clear To Send (CTS)—input
When circuit CTS is on, the terminal/printer is ready to receive data from the unit. The unit does not
attempt to transfer data or receive data when circuit CTS is off.
Data Set Ready (DSR)—input
When circuit DSR is on, the terminal/printer is ready. Circuit DSR ON does not indicate that
communication has been established with the terminal/printer.
Signal Ground (SG)
Connects to the DC ground of the unit for all interface signals.
Data Terminal Ready (DTR)—output
This signal line is turned on by the unit to indicate that it is on line. Circuit DTR ON does not indicate that
communication has been established with the terminal/printer. It is switched off when the unit is off-line.
Data Carrier Detect (DCD)—input
The DCD is on when the carrier signal is being received.
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