Campbell CR300 series, Руководство оператора

Страница: 33 / 86

CR300-Series Datalogger
23
•
LoggerNet Connect | Send New
• LoggerNet Connect |
File Control | Send
• LoggerNet Setup
• CRBasic Editor | Compile, Save and Send
• Device Configuration Utility |
Logger Control | Send Program
• Device Configuration Utility | File Control | Send
A good practice is to always retrieve data from the CR300 before sending a
program; otherwise, data may be lost. Some methods of sending a program
give the option to retain data when possible. Regardless of the program upload
tool used, data will be erased when a new program is sent if any change occurs
to one or more data table structure in the following list:
•
Data table name(s)
• Data output interval or offset
•
Number of fields per record
•
Number of bytes per field
• Field type, size, name, or position
• Number of records in table
5.6 Monitoring Data
By default, the CR300 datalogger includes three tables: Public , Status , and
DataTableInfo
. Each of these tables only contains the most recent
measurements. The Public table contains the measurements as they are made.
It is updated at the scan interval set within the datalogger program. The Status
table includes information on the health of the datalogger and is updated every
second when viewed. The
DataTableInfo
table reports statistics related to data
tables. It is also updated every second when viewed. User-defined data tables
update at the schedule set within the program.
Step-by-step instructions for monitoring data are given in Section 4.2 ,
Connect
to the CR300
(p. 7)
.
5.7 Collecting Data
The CR300 writes data to data tables according to the schedule set within the
CRBasic program. After the program has been running for enough time to
generate data records, data may be collected in
LoggerNet Connect
,
PC400
, or
PC200W . Collections may be done manually in your datalogger support
software, or automatically through scheduled collections set in LoggerNet
Setup
. A good practice is to always retrieve data from the CR300 before
sending a program; otherwise, data may be lost. Step-by-step instructions for
collecting data are given in Section 4.6 , Collect Data
(p. 15)
.
5.8 Viewing Data
View historic data in a spreadsheet format within View Pro . View Pro also
contains tools for visualizing data in several graphical layouts. Step-by-step
instructions for viewing data tables are given in Section 4.7 , View Data
(p. 18)
.
Data tables are created within the datalogger program using the DataTable()
instruction (see Appendix B.4 , Data Tables
(p. B-7)
). In Short Cut , data tables are
created in the Outputs step. The CR300 can host up to 20 data tables. Each