Справочник Пользователя для Pelco NET104A Series C2900M-B

C2900M-B (1/03)

31

The NET104A has a serial interface that can be configured on the Interface Settings configuration
page for terminal control or transparent data: RS-232 or RS-485, etc.

For local control and configuration of the unit, you can connect a data terminal (for example, a PC
running a standard terminal program) to the serial interface labeled COM on the NET104A. The
9-pin D-sub connector can be connected to a PC’s COM port.

You can use a standard terminal program to communicate with the unit. The default parameters are
set to 19200 baud, 8 bits of data, 1 stop bit, and no parity (8N1).

To access the online help, type ? (a question mark) in the terminal window. For more information on
the command set, see the 

Configuration section. This mode allows the control port to be used to

send serial data that requires flow control.

You can configure the RS-485 half-duplex mode in the web browser. The RTS and CTS signals are
enabled for flow control.

If this RS-485 mode is chosen, the camera control data is transferred to this port. Certain cameras
with fixed data length require the buffered RS-485 mode. (This half-duplex mode is not required for
interfacing to any Pelco product.)

Figure 19.  Control Terminal Port Pin Assignments in RS-232 Mode

1   2   3   4   5

6   7   8   9

VIEWED FROM SOLDERING

SIDE OF PLUG

1

DCD

Input

Data Carrier Detect

2

RXD

Input

Receive Data

3

TXD

Output

Transmit Data

4

DTR

Output

Data Terminal Ready

5

GND

Ground

6

DSR

Input

Data Det Ready

7

RTS

Output

Ready To Send

8

CTS

Input

Clear To Send

9

–

–

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