Revision 3.1
WebRelay
TM
Users Manual
2.4.4 Relay/Input Setup Page
This page is used to set up the function of the relay and the control input. Note that in this manual, the relay
is considered to be
on
when the relay coil is energized. When the relay coil is
on
, the normally open
contacts are closed and the normally closed contacts are open. When the relay coil is
off
, the coil is not
energized and the normally closed contacts are closed and the normally open contacts are open. Also note
that in this manual the input is considered to be
on
when a voltage is applied to the input. The LEDs on the
front panel of WebRelay
TM
will illuminate whenever the relay or input are in the
on
state.
1. Relay Mode:
The unit may be configured so that it operates in
Standard
mode or
Automatic Reboot
mode.
Standard
mode is used for all applications except automatic reboot applications. Unless
WebRelay
TM
will be used as an automatic reboot controller,
standard
mode should be selected. In
cases where WebRelay
TM
will be used to remotely reboot devices but not for automatic reboot,
standard
mode should still be selected.
Automatic Reboot
mode is used to configure WebRelay
TM
as a reboot controller. When this option
is selected, the options in both the Relay/Input and the Control Page Setup menus change. In
Automatic Reboot
mode, WebRelay
TM
is configured to periodically confirm that another device
(such as a server, computer, router, etc.) is working by sending ping requests to the device.
WebRelay
TM
expects a response after each ping. If a preset number of ping requests fail, it is
assumed that the device is not functioning properly. WebRelay
TM
will attempt to restore the device
to normal operation by rebooting the device. In
Automatic Reboot
mode, users also have the
ability to manually reboot the device from a remote location over the network. Note that when
WebRelay
TM
is set to
Automatic Reboot
mode, at power-up it will automatically turn the device on.
This is so that users will not need to manually turn the device on when the power fails. Also note
that from the control page, users can temporarily disable the automatic reboot function but it will
Xytronix Research & Design, Inc.
page 27