Campbell CR23X, Operator'S Manual, Page: 355 / 374

Section 12. Program Control Instructions
12-11
Example
To set up the remotes for an hourly transmission at 15 minutes past the hour,
the Time into Transmit Interval would be set at 900 and the Transmit Interval
would be set at 3600.
Transmit Delay Between Remotes
The amount of delay, in seconds, between transmission from each remote. If
this parameter is left at 0, the master datalogger will automatically assign the
delay based on the routing table (usually about 3 seconds between remotes).
Otherwise, a specific delay can be entered. A specific delay may be necessary
for slow communication links.
Some communications links do not require a delay (such as when
communicating over an NL100). In this instance, the parameter can be left at 0
and indexed.
Code Description
0 Use the default, as determined by the routing table
>0 Use the value entered
--0 Use no delay (dashes are accomplished by indexing the parameter)
Note: The wireless sensors will actually begin transmitting before the specified
transmission time (based on Time Into Transmit Interval and Transmit Interval)
so that transmission is complete when the specified transmission time occurs.
The Transmit Delay Between Remotes is factored into to the transmit time
assigned to each remote.
Example
Assume 4 wireless remotes in a network, with the first having an address of 1
and the remainder of the remotes addressed consecutively. The transmission
time is set at 900 seconds into a 3600 second interval (15 minutes past each
hour). If Transmit Delay Between Remotes is set at 5, Remote 4 will transmit
at about 15 seconds before the transmit time, Remote 3 at about 10 seconds
before, Remote 2 at about 5 seconds, and Remote 1 at the transmit time.
Swath to Receive
The number of data values that will be received from each remote when data is
transferred. If a remote sends less than the number of values indicated by the
swath, the remaining locations will be filled with an overrange value (-99999).
If a remote sends more than the number of data values indicated by the swath,
the extra values will be discarded by the local datalogger.
First Location for Data Received
The first input location in which the first data value received from the first
remote should be stored. Subsequent data values from the group of remotes
will be stored in consecutive input locations.
Note: The number of input locations required for the transferred data (Number
of Remotes * Swath to Receive) must be allocated manually.