Intermec EASYCODER 7421 Uživatelský manuál stáhnout pdf (Strana 79)

B-9

Pin Name Operation

3 Receive Data Input: Connect to transmit data pin of

connected device.

2 Transmit Data Output: Connect to receive data pin of

connected device.

6 Data Terminal

Ready (DTR)

Output: When you use a modem, connect

to modem DTR pin.

When using Intermec Standard Protocol,

this pin indicates that the printer is

switched on.

When using XON/XOFF or hardware

flow control, this pin indicates the printer

mechanical status and the status of the

printer input buffer.

5 Ground To enable communications, connect to

signal ground of connected device.

Completes circuit for all RS-232 signals.

7 Clear to Send (CTS) Input: When you use a modem, connect to

modem CTS pin. The modem must set

CTS true before the printer transmits data.

If not connected, CTS sets itself true.

8 Request to Send

(RTS)

Output: When you use a modem, connect

to modem RTS pin. The modem sets RTS

to true before transmission. The printer

sets RTS to false after transmission.

9 Printer Status Output: When not using software flow

control (XON/XOFF), connect to input of

connected device (for example, CTS).

Indicates printer mechanical status and

status of printer input buffer.

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Intermec EASYCODER 7421 Uživatelský manuál Strana 79