Panasonic KX-TDA600 Installation Manual - Page 201
Hybrid IP-PBX 9-pin, Printer/PC 25-pin, Circuit Type, Signal, Pin No., RD RXD, SD TXD, ER DTR, DR
UPC - 037988851775
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2.12 Connection of Peripherals For connecting a printer/PC with a 25-pin RS-232C connector Hybrid IP-PBX (9-pin) Printer/PC (25-pin) Circuit Type Signal (EIA) Name Pin No. Pin No. Signal Circuit Type Name (EIA) BB RD (RXD) 2 1 FG AA BA SD (TXD) 3 3 RD (RXD) BB CD ER (DTR) 4 2 SD (TXD) BA AB SG 5 20 ER (DTR) CD CC DR (DSR) 6 7 SG AB CA RS (RTS) 7 5 CS (CTS) CB CB CS (CTS) 8 6 DR (DSR) CC 4 RS (RTS) CF RS-232C Signals • Receive Data (RXD):...(input) Conveys signals from the printer or the PC. • Transmit Data (TXD):...(output) Conveys signals from the unit to the printer or the PC. A "Mark" condition is held unless data or BREAK signals are being transmitted. • Data Terminal Ready (DTR):...(output) This signal line is turned ON by the unit to indicate that it is ON LINE. Circuit ER (DTR) ON does not indicate that communication has been established with the printer or the PC. It is switched OFF when the unit is OFF LINE. • Signal Ground (SG) Connects to the DC ground of the unit for all interface signals. • Data Set Ready (DSR):...(input) An ON condition of circuit DR (DSR) indicates the printer or the PC is ready. Circuit DR (DSR) ON does not indicate that communication has been established with the printer or the PC. • Request To Send (RTS):...(output) This lead is held ON whenever DR (DSR) is ON. • Clear To Send (CTS):...(input) An ON condition of circuit CS (CTS) indicates that the printer or the PC is ready to receive data from the unit. The unit does not attempt to transfer data or receive data when circuit CS (CTS) is OFF. • Frame Ground (FG) Connects to the unit frame and the ground conductor of the AC power cord. Installation Manual 201