User`s manual

Interfaces

6/12/06 KDU Plus User’s Manual 980548-001 Rev. A

COM/PRINTER Serial Port Configurations

The +5 volts from the printers (pins 1 and 9) provide power for the KDU Plus and any

additional input devices attached to the KDU Plus.

Maximum total current draw for printers with ZPL hardware architecture: 750mA

Maximum total current draw for printers with EPL hardware architecture: 250mA

The KDU Plus’s current without external input devices attached is: 50mA

Caution • The KDU Plus’s input ports (AUX1, AUX2, and PS/2 style) are not fused.

Exceeding the total current draw available could damage the your input device, KDU Plus,

or printer.

KDU Plus is DCE

PRINTER is DTE (ZPL)

KDU is DTE

PRINTER is DCE (EPL)

NAME DIRECTION NAME DIRECTION

1 NOT USED NOT USED +5V +5V FROM PRINTER

2 TxD TO PRINTER RxD FROM PRINTER

3 RxD FROM PRINTER TxD TO PRINTER

4 DTR FROM PRINTER CTS TO PRINTER

5 GND GND GND GND

6 DSR TO PRINTER DTR FROM PRINTER

7 RTS FROM PRINTER NOT USED NOT USED

8 CTS TO PRINTER RTS FROM PRINTER

9 +5V +5V FROM PRINTER NOT USED NOT USED

45mA*

120mA*

25mA*

( 45mA + 120mA + 25mA )

+ 50mA < Max. Current

50mA

* - Not real values

Current Draw