OM-WEB Series User's Guide
Installing a OM-WEB Series Device
14
Using the web interface
You can view current measurements and configure hardware options from the device's web interface. The web
interface provides four tabs. Each tab represents an HTML page that is stored on the device.
Measurements
tab (home page) – lists the temperature measurements, digital values, and alarm status read
from each channel on the OM-WEB-TEMP, OM-WEB-TC.
System Info
tab – summarizes the current network settings set for the OM-WEB Series device, and
provides a button that when pressed flashes the
POWER/COMM
LED on the device. The settings on this tab
are not configurable via the web interface; use InstaCal to configure network settings.
Configuration
tab – provides separate menu options for configuring temperature, digital, and alarm
options. To change configuration settings, enter the user name and password set for the device and click the
Log In
button. The user name and password cannot be changed from the web interface; use InstaCal to
change the user name and password.
Temperature menu
Provides options to set the sensor category and connection type for each temperature channel
pair.
The factory default configuration is
Disabled
. The Disabled mode disconnects the analog
inputs from the terminal blocks and internally grounds all of the A/D inputs. This mode also
disables each of the current excitation sources. Leave unused channels disabled.
DIO menu
Provides options to set the direction of each digital I/O channel and value of each digital I/O
channel configured for output.
Alarm menu
Provides options to set up the temperature conditions to activate an alarm, and the output
state of the channel (active high or low) when activated. You can configure up to eight
independent alarms.
The configuration options are enabled on these pages when you are logged in. The device is calibrated to
the selected settings each time the "
Submit
" or "
Calibrate
" button is pressed.
Help
– summarizes the options on each web page, and includes step-by-step procedures for setting up your
temperature channels, digital channels, and alarms.
Logging in to a device
Configurable options are disabled until you log in with the user name and password set for the device. Only one
user can be logged in at a time. The default login name for the OM-WEB-TC is "
webtc
", and "
webtemp
" for the
OM-WEB-TEMP. The default password is "
omega
" for each device. Use InstaCal to change these values.
Base64 encryption is used to encrypt the login name and password. JavaScript must be enabled on the browser
to encrypt login information. If JavaScript is disabled on your browser when you log in, the user name and
password values are transmitted as plain text with no encryption applied.
Configuring OM-WEB Series hardware using InstaCal
All hardware and network options are configurable with InstaCal. When the device is using its default
configuration, InstaCal has access to all functions on the device. Login is done in the background if the default
user name and password are assigned to the device.
If the default user name and password for a device have changed, configurable options are disabled until you
log in with the user name and password set for the device. Only one user can be logged in at a time.
You should change the user name and password from the default values
To prevent unauthorized changes to your device configuration, make sure you change the user name and
password values from the default values. If you forget your settings, you can restore the default values:
press
and hold the reset button for three seconds to set all network settings, including the user name and password,
back to the default values.
Note
: For security purposes, do not change the log in information to the name and password used to access
secure accounts, such as a credit card or bank account.
