Pelco C1977M-D User Manual

Pelco Manual C1977M-D (6/02)         

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The default parameters of the transparent data port agree with the most commonly used settings, as
shown in the following table.

Table F.  Interface Settings

Baudrate

9600

Select any transmission rate from 300 to 19200 baud.

Data bits

8

Select 7 or 8 data bits.

Parity

none

Select odd, even, or none.

Stop bits

1

Select 1 or 2 stop bits.

Second com port

Terminal

The second COM port (Control Terminal port) can be set
to use Terminal mode, which is used to program the unit
through HyperTerminal.

Or, it can be set to “COM 2,” which will allow control of
devices such as a digital video recorder (DVR) or pan/tilt/
zoom camera, etc. As such, it functions just like the
Transparent Data port, thus providing two control ports.
However, when set to “COM 2” PelcoNet can no longer
be accessed through HyperTerminal.

Baudrate

19200

Select any transmission rate from 300 to 19200 baud.

Data bits

8

Select 7 or 8 data bits.

Parity

none

Select odd, even, or none.

Stop bits

1

Select 1 or 2 stop bits.

Halfduplex mode

off

If this RS-485 mode is chosen, the camera control data is
transferred automatically to the control terminal port, which
is a serial interface on the rear panel of the unit to which a
PC can be hooked. This mode supports flow control.