Campbell Scientific CC640 Digital Camera - Manual (Page 37)

CC640 Digital Camera
13. Interface Guide for CR510, CR10X, or CR23X
This section contains information for interfacing the CC640 camera to a
CR510, CR10X, or CR23X datalogger. The CC640 camera can interface to
the datalogger via the CS I/O port directly or through an MD485 interface.
13.1 Datalogger Requirements
The datalogger needs to be a 2 MB datalogger. The datalogger must also
contain the PakBus operating system to support the communication and file
storage capabilities.
13.2 Memory Allocation
Memory must be allocated in the datalogger for the purpose of storing files.
The memory is allocated in multiples of 64 KB blocks. Memory allocated for
file storage comes out of final storage space. The files are stored in a circular
buffer (ring memory). When new files are sent from the camera to the
datalogger’s final storage memory the oldest files will be deleted to make room
for the new file.
The memory can be allocated as follows:
• Enter *D16A
• 16:XX should be displayed. XX represents the number of 64 Kbyte
memory blocks allocated for file storage.
• Enter the number of blocks required followed by A. (Recommend 6 to 16
blocks for a 2 MB logger)
The number of memory blocks required will vary with the compression level
selected and the number of files required to reside in the dataloggers final
storage. It is recommended to allocate between 6 to 16 memory blocks. If the
compression level selected is none then 16 memory blocks (1024 kbytes) is
recommended. Files can exceed 500Kbytes with None selected as
compression.
13.3 PakBus Settings
PakBus communication facilitates the transfer of images from the camera to
the datalogger. Several parameters must be set on the datalogger to enable
PakBus communication with the Camera.
These parameters can be set either with a datalogger keyboard display, using
Edlog \ Options \ PakBus Settings, or with the Device Configuration Utility
using Terminal Emulator mode.
13.4 *D15 Settings
The *D15 settings are used to set the PakBus parameters necessary for
communication with the camera. Refer to PakBus Networking Guide for
additional information on PakBus and these settings. If values for parameters
01, 02, 03 are too small, you may not be able to connect to all network nodes.
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