Section 4. Setting up Datalogger Networks
If you are using LoggerNet Admin or LoggerNet Remote 4.0 and
using the Connect Screen to connect to a remote server that is
running an older version of LoggerNet, the behavior will be
different than described above. When connecting to a LoggerNet
3.4.1 server, you will be disconnected with no advanced warning
when Max Time On-Line is reached. A message will be
displayed indicating that Max Time On-Line has been reached.
When connecting to servers older than LoggerNet 3.4.1, the
behavior will be variable. Generally, you will be disconnected at
some point, but the timing of the disconnect will not be
predictable.
NOTE
Maximum Baud Rate – Select the arrow to the right of this field to choose a
maximum baud rate for communication with this datalogger. Note that the
actual rate of communication may be limited by the capability of other devices
in the communications chain.
PakBus Address – Each device in a PakBus network has a unique address.
Valid addresses are 1 through 4094. 4094 is a broadcast address, and is
therefore reserved for the LoggerNet PC.
Advanced
Extra Response Time – In this field, specify the additional time that
LoggerNet should delay before terminating the communications link if there is
no response from the datalogger. Additional time may be needed in instances
where the communications link is noisy or network traffic is heavy.
Maximum Packet Size – Data is transferred in “chunks” called packets. For
most devices the default value is 2048 byes. The value entered in this field can
be changed in 32 byte increments. If a communications link is marginal,
reducing the packet size may improve reliability.
Security Code – A datalogger can have a security code to restrict access to the
datalogger. This helps prevent inadvertent changes to the datalogger’s program
or memory. A valid security code is any four digit, non-zero number. The
security code is set by the datalogger program, through a keyboard display, or
the remote keyboard utility. If a datalogger program that sets or changes
security is loaded into the datalogger, the Security Code in LoggerNet must be
changed to match so that the server can access the datalogger. (Security is not
available in the CR5000, CR9000, and CR200 Series dataloggers.)
Call-back ID – Call-back is a mode supported by some dataloggers where an
instruction in the datalogger program can initiate a call to the computer. The
call-back ID is sent by the datalogger to identify itself when contacting the host
computer. LoggerNet uses this value to know which datalogger initiated the
call-back.
Delay Hangup – The amount of time, in seconds and milliseconds, that
LoggerNet should delay before hanging up the link to the device. If a new
command to the device is issued before the delay has expired, communication
will not be terminated.
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