User guide

Data Ports

Serial Port

57516L-001 Rev. 1 10/12/2004 170PAX4 User Guide 119

RS-232 Interface Connections

Direct Connection to a Computer

The print engine is configured as Data Terminal Equipment (DTE).

Figure 52 shows the internal connections of the print engine’s RS-232 connector.

Figure 52 • RS-232 Connections

Pin 9 is also available as a +5 VDC signal source at 750 mA. The maximum current draw may

be limited by option configuration.

Note • Adapters are available from Zebra Technologies LLC.

• RS-422/RS-485 adapter, Zebra part number 33114M

• RS-232 DB-9 to DB-25 adapter, Zebra part number 33109M

Note • Use a null modem (crossover) cable to connect the print engine to a computer or any

other DTE device.

Caution • To enable this capability, a qualified service technician must install a jumper on

the print engine’s main logic board on JP1, pins 2 and 3.

NOTE: Pin 1 is unused and unterminated.

RS-232 Connector (DTE)

Rear Panel Female DB-9

RXD (receive data) input

TXD (transmit data) output

DTR (data terminal ready) output

SG (signal ground)

DSR (data set ready) input

RTS (request to send) output

CTS (clear to send) input

+5 VDC signal source

+5 VDC