Watlow D4T Data Logger
•
48
•
Chapter 3 Using the D4T Front Panel
it will be sent directly to one of three other destinations (USB, TFTP server or a Samba serv-
er). The file transfer can also be initiated manually at any time. The file transfer process from
internal memory, whether completed automatically or manually, will move all log files from
internal memory to the selected destination. To learn more about data logging see "
" in the Overview Section of this User Guide.
From the UI, there are two ways to setup and initiate data logging:
①
To setup and run data logging using the UI:
1. Push the
Menu button.
2. Push the
Data Logging button.
3. Push the
Select Data Points button to select the data points that will be captured in
the log.
4. Push the
Done button when complete.
5. Push the
Setup button to define the following:
- Logging Status: indicates whether or not recording is active or not.
- File Name: any alphanumeric characters, 63 maximum.
Note:
A new dedicated file is created when data logging starts and the filename format
will be "file name" "date stamp" "time stamp".csv or enc".
- Log To: USB or Internal Memory.
- Log Interval: defines the frequency in which the log will be written, 0.1 second to 60
minutes.
- File Type: Encrypted (*.enc), Comma Separated Values (*.csv) or Both.
- File Size Limit: 20MB when using TFTP or Samba, 1GB when using USB.
- Memory Full Action: when log to device defined above is full, Overwrite or Stop.
Note:
Logging to USB allows for Stop only, when memory is full.
- Date Format: MM/DD/YYYY or DD/MM/YYYY.
- Time Format: 12 or 24 hour clock.
6. Push the
Done button when complete.
Note:
Although this completes the setup it may be desired to configure the file transfer
function before starting data logging (see
below).
7. If desired push the
Annotation button. Annotation allows for time specific entry of up
to 32 alphanumeric characters to a specific entry (line) within the log file. The maxi-
mum speed at which annotation can be written to the log file is approximately once ev-
ery 20 seconds. Once written to the file, the annotation field on the UI will be deleted
where a new value can be entered and written again.
8. Push the
Start button to begin data logging.
Note:
Data logging is terminated when power is lost, however, the file as it was prior to the loss
of power will be retained.
Transferring Data Log Files via the UI
A user can transfer data log files manually or automatically.
