Revision 3.1
WebRelay
TM
Users Manual
It is recommended that the ‘ON/OFF’ buttons not be displayed on the control page in two distinct cases.
First, if turning the device
off
causes communications with WebRelay
TM
to be lost (for example, WebRelay
TM
controls a router or modem which must be operating properly to remotely communicate with WebRelay
TM
).
In this case the user may press the ‘OFF’ button and lose communications with WebRelay
TM
so he/she
cannot turn the device back
on
. The second situation where not displaying the ‘ON/OFF’ buttons is
recommended is when WebRelay
TM
is wired to control a reset line instead of power. In this case the user
cannot actually power off the device so ‘ON/OFF’ buttons are not necessary.
15. Reboot Button:
When this option is set to
Yes
, the control page will display a button to reboot the device. When the user
presses this button, WebRelay
TM
will go through the reboot sequence specified in the ‘Reboot Options’ field
(under the ‘Relay/Input’ tab).
16. Auto Refresh Page:
Web pages traditionally display static information. The WebRelay
TM
control page, however, displays
information that is dynamic. Each time the control page is loaded to the browser, it displays a snapshot of
the current status of the unit. If the state of the unit changes, the information on the control page will be
outdated unless the page is re-loaded. Whenever a user changes the state of the relay via the web browser,
the web page will automatically reload the control page to display current information. If, however, the
relay state changes due to a change in the control voltage input or due to a command sent from another
machine, the relay state will not be updated and the control page information will be obsolete. In addition,
when the optically-isolated input changes, the control page will be obsolete until the page is refreshed.
WebRelay
TM
can not force the web page to be updated when the input changes. The ‘Auto Refresh Page’
option will cause the control page to continually update its contents by setting a timer in the web page that
causes it to be reloaded at a specified time interval.
17. Duration:
If the ‘Auto Refresh Page’ option is set to
Yes
, this field specifies the time interval in seconds that the page
will be refreshed. It can be set from 1 to 32 seconds.
Xytronix Research & Design, Inc.
page 40