D-Link DCS-3716, Руководство пользователя

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43 D-Link DCS-3716 User Manual
Configuration
RS-485
You may configure the RS-485 settings or communication specifications (baud rate, data bit, stop bit, and parity bit) for your camera. RS-485 is a
serial communication method for computers and devices. RS-485 is used to control a PAN/TILT apparatus, such as an external camera enclosure.
Support..
PAN-TILT:
Protocol:
ID:
Baud.Rate:
Data.Bit:
Parity.Bit:
Stop.Bit:
When Support. PAN-TILT is enabled, a control panel will be
displayed on the Live Video page allowing control through
RS-485 for an external camera enclosure.
Select one protocol type from the pull-down menu.
This ID is the identifier for RS-485 devices. IDs range from 1 to
255.
Baud Rate is a speed measurement for communication
between a transmitter and receiver which indicates the number
of bit transfers per second. A higher baud rate will reduce the
distance of the two devices (transmitter and receiver). Values
range from 2400 (default) to 19200 bps.
This value is the number of data bits in a transmission. The data bit can be 7 or 8
(default).
Parity is a form of error checking used in serial communication. For even and odd
parities, the serial port sets the parity bit (the last bit after the data bits) to a value
to ensure that the transmission has an even or odd number of logic-high bits. For
example, if the data is 011, for even parity, the parity bit is 0 to keep the number of
logic-high bits even. If the parity is odd, the parity bit is 1, resulting in 3 logic-high
bits. Parity can be set to No. (none), Even , and Odd .
The stop bit is used to signal the end of communication for a single packet. The more
bits used for stop bits, the greater the lenience in synchronizing the different clocks
but the slower the data transmission rate. The stop bit can be set to 1 or 2. The default
value is 1.
RS-485.
Pin.Block