Wireless Connectivity
VFC400-WiFi User Guide
19
If a logger is scheduled to take a temperature reading and also upload readings to the server at
the same time, the temperature reading will always be taken first before the upload starts.
l
If the logger is powered via the AAA batteries
The upload to the server takes place every log interval, or multiple thereof, but no sooner than every 60
minutes.
For example, a logger that records every 15 minutes will upload readings to the cloud server every 60
minutes, a logger that records every 45 minutes will upload readings every 1½ hours.
Alarms
As soon as a VFC400-WiFi triggers an alarm, this is reported to the cloud server immediately, regardless of the
upload interval for temperatures.
Wireless and Cloud Symbols
On the display, wireless connection and link to the LogTag
®
Online cloud server are shown using the wireless
and cloud connectivity symbols.
This symbol shows the status of the last connection to the wireless network (WLAN). If the circle
shows a tick, the VFC400-WiFi 's last connection to the wireless network was successful.
When USB power is supplied, the VFC400-WiFi remains connected to the WLAN.
This symbol is shown when the last connection to the wireless network was successful and the
device is powered by batteries.
When the VFC400-WiFi is powered by the AAA batteries, it does not remain connected to the WLAN
to preserve battery power. Instead, the connection is re-established automatically at the next
scheduled data upload to the LogTag
®
Online cloud server.
This symbol shows the status of the last connection to the LogTag
®
Online cloud server. If the circle
shows a tick, the VFC400-WiFi 's last connection to LogTag
®
Online was successful.
This symbol shows while the VFC400-WiFi is transmitting data to the LogTag
®
Online cloud server.
Typically you will see wireless and cloud symbols together, unless there is an issue. Please see
for further details about the various symbol combinations that can be displayed.
