User`s guide

Universal Library User's Guide Temperature Input Boards - WEB-TEMP, WEB-TC
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Hardware considerations
Web based
If the user name and password have been changed from the default, the user must log in with the new user
name and password to change configuration settings. Only one user can be logged in at a time. The log in
session times out after five minutes of inactivity. Log in is not required to view the current configuration in
InstaCal.
Hardware options are configurable on the web browser or with InstaCal. If hardware options are changed on
the web browser while InstaCal is open, restart or refresh InstaCal to update its configuration pages with the
settings stored on the device. Network parameters and some configuration settings for resistance measurement
are configurable with InstaCal only.
Configuration options are stored in non-volatile memory in EEPROM, and are loaded on power up.
Network parameters
The following network parameters are configurable with InstaCal. Configurable network options are enabled
when you start InstaCal if the default user name and password are still assigned. If a custom user name and
password have been assigned, the configurable network options are enabled after you log in.
 Identifier: Text that identifies the WEB device. This value is optional, and is not set by default. You can
enter up to 48 alpha-numeric characters. You can set this value in code using the Universal Library
ConfigItem option BINODEID with cbSetConfigString().
 DHCP: Enables automatic configuration of the IP address of the WEB device by a DHCP Server. When a
DHCP-enabled server is available, an IP address is automatically assigned to the device when it is
detected on the network. This value is set to Enabled by default. Disable this option when the server is
not DHCP-enabled, or when you want to enter a static IP address.
 IP: The IP address that is currently stored on the device is displayed in the Current Settings frame in
InstaCal‘s Board Configuration dialog. By default, this address is set automatically when a DHCP server
is available. If you are setting a static IP address manually, enter it in the IP text box on the Default
Settings frame. Every device connected to the network must have a unique IP address. This value is set
to 192.168.0.101 by default.
 Subnet: The Subnet Mask that is currently stored on the device is displayed in the Current Settings
frame in InstaCal‘s Board Configuration dialog. The Subnet Mask is the part of the IP address that
denotes the local Subnet. By default, the Subnet Mask is set automatically when a DHCP server is
available. If you are setting a static IP address manually, enter the Subnet Mask in the Subnet text box on
the Default Settings frame.
This value is set to 255.255.255.0 by default. The first three groups of numbers indicate the network
number to which the device is connected, and the last group indicates the node number within the
network that identifies the device.
 Gateway: The Gateway IP address that is currently stored on the device is displayed in the Current
Settings frame in InstaCal‘s Board Configuration dialog. By default, the Gateway IP address is set
automatically when a DHCP server is available. If you are setting a static IP address manually, enter the
Gateway in the Gateway text box on the Default Settings frame. This value is set to 192.168.0.1 by
default. The Gateway parameter is used for communication between devices on different networks.
 Server: Enables or disables the device's web page server. This value is set to Enabled by default. When
enabled, you can view the device's web page with a web browser. When disabled, you can only access the
device with InstaCal or the Universal Library. Disable when you want to restrict access to the device's
web page. Changes to this setting take affect the next time you power up the device.
 Change Login button: Opens a dialog to change the user name and password used to log in to a device
session. Once changed, log in is required to change configurable options on the device. The user name
and password are not stored on the host computer, and must be entered each time you start the
application. Refer to Logging in to a device session on page 193 for more information.