Orient Technologies BTP-2002NP Manual de instalación descargar pdf (Pagina 9)

BTP-2002NP Installation manual

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2.2.1 Interface Connector

RS-232 serial interface (DB25F)

Signal

name

Signal

direction

Function

1 FG — Frame ground

2 TXD Output Transmit data

3 RXD Input Receive data

4 RTS Output Same as DTR signal

DSR Input This signal indicates whether the host computer can

receive data.

SPACE indicates that the host computer can receive

data, and MARK indicates that the host computer

cannot receive data.

When DTR/DSR control is selected, the printer

transmits data after confirming this signal (except when

transmitting data by DLE EOT, and GS a).

When XON/XOFF control is selected, the printer does

not check this signal.

7 SG — Signal ground

20 DTR Output 1) When DTR/DSR control is selected, this signal

indicates whether the printer is busy. SPACE

indicates that the printer is ready to receive data,

and MARK indicates that the printer is busy.

2) When XON/XOFF control is selected:

The signal acts the same as when DTR/DSR

control is selected.

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Orient Technologies BTP-2002NP Manual de instalación Pagina 9