Справочник Пользователя для Pelco C2908M-B

C2908M-B (4/05)

47

Serial port function Terminal

Select a controllable device from the pull-down menu: Terminal, Transparent, or Pelco Prot (protocol).

If the port must transmit data transparently, select Transparent. You can use Pelco Prot to send any kind 
of control data for a Spectra, Esprit, Genex, or a Pelco matrix.

Baud rate

19200

Use the pull-down menu to select a transmission rate from 600 to 115200 baud. Refer to Appendix A for 
settings.

Data bits

8

The number of data bits is set at 8 per character.

Stop bits

1

Use the pull-down menu to select the number of stop bits (1 or 2) per character. Refer to Appendix A for 
settings.

Parity check

None

Use the pull-down menu to select the type of parity check (None, Even, or Odd). Refer to Appendix A for 
settings.

Interface mode

RS232

Use the pull-down menu to select the required protocol for the port (RS232 or RS422/485). Use RS-232 for 
two-wire communication (TXD and RXD) and RS-422 for four wire communication (TX+, TX

−, RX+, RX−). 

(RS-485 is not normally used except in advanced applications.)

Half-duplex mode

Off

Typically, half-duplex mode is used for transmission schemes that use one medium to both transmit and 
receive data. This RS-485 mode will keep the NET300 from transmitting and receiving data simultaneously. 
Only one function at a time is allowed. The transmitter is turned off when the device at the other end of the 
line will use the connection. (Refer to Table A.)

Buffered mode also transfers data input to the COM port.

Depending on the equipment used, the Serial Port Function field may have to be set to Transparent if 
sending any control data.

Genex protocol ID

N/A

Enter the address of the Genex unit with which you want to communicate.

Spectra/Esprit 
protocol ID

N/A

Enter the address of the Spectra or Esprit unit with which you want to communicate. This must match the 
P-protocol address of the Spectra or Esprit unit.