Pelco C2900M-B(1/03 manual Connecting Data Terminals, Use As Control Terminal Port

CONNECTING DATA TERMINALS

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.

Use As Control Terminal Port

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 PCÕs 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.)

					Pin	Name	Direction	Description
VIEWED FROM SOLDERING					1	DCD	Input	Data Carrier Detect
					2	RXD	Input	Receive Data
SIDE OF PLUG
					3	TXD	Output	Transmit Data
1	2	3	4	5
					4	DTR	Output	Data Terminal Ready
					5	GND		Ground
					6	DSR	Input	Data Det Ready
6	7	8		9	7	RTS	Output	Ready To Send
					8	CTS	Input	Clear To Send
					9	–	–	–

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

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