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PST-1000 series Technical Manual 4 - 3

SERIAL PORT COM1

PIN ASSIGNMENT OF 9 PIN D SUB MALE CONNECTOR:

PIN # DEFINITION ALTERNATIVE DEFAULT SETTING

1 DCD +12 VDC DCD

DTR

GND

DSR

RTS

CTS

RI +5 VDC +5 VDC

• IRQ 4 is applied for this port.

• COM 1 terminator must be applied when there is no device connected

to COM1 port, otherwise the CR port and customer display will not

function.

• It is definitely inadvisable to connect serial input devices to COM 1

port without thorough investigation. The reason is that some input

devices like serial mouse do not provide standard RS232 hardware

handshaking signals. In PST systems, both the customer display and

cash drawer controller share the COM 1 port. When the system issues

any command to cash drawer controller or the customer display, the

hardware handshaking signal will be in error status and could halt

this port if COM1 is not connected properly.

• In PST1000, this connector is occupied by OD-300.

• DC supply of this port is UPS supported.

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Mustek PP3000 Especificaciones Pagina 23