Chapter 4: Web Interface 27
Addresses must be entered in standard IP dot notation. The gateway address must be in the
same subnet as the IP address. You cannot set the IP address to: a Class A address of 0.0.x.x, a
loopback address of 127.x.x.x, the default value of 192.1.1.1 or an address at or above
248.x.x.x. The subnet mask cannot be 0.0.0.0.
The default interface mode value is auto-negotiate. To change the mode, select another value
from the listbox. See Network interface on page 4 for more information.
3. If you changed any values, click Apply. If you changed the address information, it will not take
effect until the next reboot of the ESP-4 MI hub. To reboot, click the Reboot button. If the IP
address had not been previously set or the hub has been reinitialized, the hub
reboots automatically.
Displaying or Changing Serial Port Interface, Attributes and
Connection Methods
The Port Configuration display includes the serial port interface, attributes and connection
methods. There are four Port Configuration displays, one for each of the ESP-4 MI hub serial ports.
To display or change port interfaces, attributes or connection methods:
1. From the Main Menu, select Port 1 Configuration, Port 2 Configuration, Port 3 Configuration
or Port 4 Configuration. The Port Configuration window for the selected port opens.
2. To display or change the port interface:
a. Enable the Interface Type radio button, then click Apply. The current port interface value
is displayed.
b. To change the interface, make a selection from the listbox.
If you select RS-422 or RS-485, you may also set a radio button in the RS422/RS485
Termination row to enable or disable 100 ohm termination. See Physical interfaces on
page 4 for more information.
c. If you changed the interface, click Apply. The change will take effect immediately.
3. To display or change the serial port attributes:
a. Enable the Serial Attributes radio button, then click Apply. The current values
are displayed.
b. To change any of the fields, select a value from the appropriate listbox. See Table 3.10 on
page 23 for valid and default values.
c. If you changed any values, click Apply. The change will take effect during the next
connection to that port.
4. To display or change the connection methods:
a. Enable the Serial Connection Methods radio button, then click Apply. On the display,
radio buttons indicate if a connection method is enabled or disabled. Text boxes contain
current values for applicable features.
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