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CCFC Field Camera
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The camera is a PakBus Leaf node and is not capable of performing any
routing. However, the CCFC has the ability to communicate with devices that
are several hops away on the PakBus network.
15.1 Send Via PakBus: Concurrent PakBus Communications
PakBus allows the camera to download photos to a datalogger simultaneously
with other datalogger communications. A communications task will take longer
if the datalogger is communicating with multiple devices at the same time.
It is beneficial to set the system timing up to avoid photo transfers when other
communications are scheduled.
For example, longer connect times on long distance telephone connections can
be avoided by scheduling photo transfers from the camera to the datalogger
outside the scheduled data collection time. If a station is called on the hour to
retrieve data, photo acquisitions could be initiated before the scheduled call (15
minutes prior) to shorten the connect times.
15.2 Send Via PakBus: PakBus Graph Operations
The CCFC supports configuration via PakBus Graph over the serial port. A
datalogger or other type of PakBus relay device is required to interface PakBus
Graph to the camera.
15.2.1 Dataogger Settings
The datalogger must be configured as a router (i.e.
Is Router
must be set to
true) and the camera PakBus address must be in the list of allowed neighbours
for the datalogger port used. The camera and the datalogger must be set to use
the same baud rate to communicate properly.
15.2.2 Discovery
After starting the PakBus graph, the camera may not be visible immediately.
To discover the camera, right click on the green box marked as
[4094]
in the
graph and click on
Search for Neighbours
. This will open the
Search for
Neighbours
dialog box, press the
Start
button and the graph should display all
the devices within the PakBus network.
15.3 Setting Up Datalogger to Work with CCFC: PakBus
Variable Control
The camera is capable of receiving variables, commands, or text from a
datalogger. The specific operational parameters that can be altered or
controlled include:
x
File Captions
x
Camera Window Defroster
x
Camera Shutdown
x
GPS Coordinates
The use of the
Send Variable
instruction allows the datalogger to transfer
values or text that can be used in the photo or video banners. The
Send
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