Axis 24HUM Administration Manual page 33

AXIS 2400/2401 Administration Manual
Purpose
Both serial ports - Port 1 and Port 2 - can be designated as either of the following:
• Generic - the AXIS 2400/2401, through the Generic driver, has terminal server capabilities;
consequently, third party applications can have complete control of the serial ports using TCP
or HTTP. For more information see Appendix D - The RS232 Interface and Appendix E - CGI
Parameters.
• Pan Tilt - from the drop down dialog choose from several Pan Tilt drivers supported as standard
by the AXIS 2400/2401. A list of currently supported drivers is provided in Supported Pan Tilt
Drivers, on page 48.
• None - if you are not connecting a Pan Tilt or Generic driver to the port.
Interface Mode
From the drop-down dialog you can configure COM1 as either an RS232 or RS485 port. Selecting
the former logically connects Serial Port 1 to the COM 1 connector; whereas the latter connects
the port to the Terminal Block Connector.
Notes:
•Most CCTV equipment suppor ts the RS485 standard - that is a bi-directional, half duplex stan-
dard for transmitting data over multi-drop communications line. Suppor ting up to 32 drivers
and 32 receivers over a single twisted pair cable, the maximum cable length should not exceed
4000 feet. Typically used for connecting a single PC to several addressable devices over the
same cable.
•Many Video cameras support RS232 as it provides for a reliable point-to-point communications
at low data transmission rates. Your wiring distances should be limited to one or two hundred
feet for asynchronous data lines, and about 50 feet on synchronous lines.
Communications Settings
Using the drop-down dialogs for Baud Rate, Data Bits, Stop Bits and Parity; match the AXIS
2400/2401 data transmission formats with the devices connected to the COM1 and COM2 ports.
Note:
The appropriate communications settings for each supported Pan/Tilt driver are defined in Sup-
ported Pan Tilt Drivers, on page 48. Check the user documentation supplied with your Pan Tilt
device for detailed information.
Configuring the Video Server
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