Section 1. Setting Up the Network and Communicating with the Datalogger
1-2
PC208W, Version 3.3, Instruction Manual
The Setup window consists of three tabs: HARDWARE, DATA
COLLECTION, and SCHEDULE. Each device will have these three tabs
but only parameters relevant to that type of device will be shown on the tabs.
1.2.2.1 Hardware Setting
PC208W inserts default values for most parameters, but some it can’t know.
Therefore, once you add devices to the Device Map, click on the
HARDWARE tab for each device to enter settings unique for that device, such
as baud rates for COM ports, brand of telephone modem (for initialization
strings), telephone numbers, radio IDs or paths for dataloggers, etc.
1.2.2.2 Data Collection Settings
You will also need to set up what data you want to collect and how you want to
collect and store it. This information goes on the DATA COLLECTION tab
for the datalogger. Note that PC208W will suggest a filename for the data, but
you can Browse to choose a different name, directory, or even a different
computer if you’re on a network.
1.2.2.3 Schedule Settings
PC208W can be configured to call one or more dataloggers and collect data on
a predefined schedule. Once all data has been collected from a datalogger, the
call is automatically terminated. This function is set up on the Schedule tab for
the datalogger.
The first field to set up is the Calling Interval. The Calling Interval is how
often PC208W should call the datalogger to collect data. When the schedule is
first set up, the initial starting time for scheduled data collection should be
entered into the Next Time to Call field. Once the schedule is implemented,
this field will be updated each time the scheduled call is successful to reflect
the next time that PC208W will attempt to make a scheduled call.
The Next Time to Call will be determined based upon entries in the Primary
Retry Interval, the Retries Using Primary Interval, and the Secondary Retry
Interval fields. The Primary Retry Interval is an interval at which calls will be
made if a scheduled call fails. The Retries Using Primary Interval field is the
number of times calls will be attempted using this interval. The Secondary
Retry Interval is an interval that will be used if all of the Primary Retries fail.
Following are some of the rules PC208W will follow for scheduled data
collection.
•
If a scheduled call for a device is successful, the "Next Time to Call" will
be incremented one "Calling Interval". For instance, if the Calling Interval
is set at 1 hour and a successful call occurs at 8:00 a.m., the "Next Time to
Call" will be set to 9:00 a.m.
•
If a scheduled call fails and the "Retries Using Primary Interval" is set to
something other than 0, and this number of Primary Retries has not been
exhausted, the "Next Time to Call" will be incremented by the Primary
Retry Interval value, plus the time that the call actually took to fail (this
allows time for a hardware reset). For instance, if the original time for a
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