Panasonic KX-TVS80, KX-TVS50 installation manual EIA RS-232C Signals

2.8 TERMINAL CONNECTION

Table 7 Pin Configuration of the EIA (RS-232C)

Pin		Signal Name	Circuit Type
Number			EIA	CCITT
7	SG	Signal Ground	AB	102
8	DCD	Data Carrier Detect	CF	109
20	DTR	Data Terminal Ready	CD	108.2

2.8.3EIA (RS-232C) Signals

Frame Ground (FG)

Connects an external ground to the unit frame, 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

This lead is held on whenever DSR is on.

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.

INSTALLATION 39