The Eltron Company LP2122, LP2142, LP2042, LP2022 user manual Host

Troubleshooting

Serial Interface The figure below displays the cable wiring re- Cable Wiring quired to use the printer’s serial interface.

Host	DB-9	DB-9	Printer
	Pin #	Pin #
N/C	1	1	+5 Volts*
RxD	2	2	TxD
TxD	3	3	RxD
DTR	4	4	N/C
GND	5	5	GND
DSR	6	6	RDY
RTS	7	7	N/C
CTS	8	8	RDY
RI	9	9	N/C

Female DB-9 to Male DB-9

Cable P/N 300017-006 (6') or 300017-010 (10')

Host	DB-25	DB-9	Printer
	Pin #	Pin #
N/C	8	1	+5 Volts*
RxD	3	2	TxD
TxD	2	3	RxD
DTR	20	4	N/C
GND	7	5	GND
DSR	6	6	RDY
RTS	4	7	N/C
CTS	5	8	RDY
RI	22	9	N/C

Female DB-25 to Male DB-9

Cable P/N 300018-006 (6')

*+5 volts at 150 mA for external device (e.g. KDU or scanner)

980008-001 Rev. B 27