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the device, see it. 5.3.1) and select the transition to the specified address (the main page with the tab headings will
be displayed for switching to other modes).
If the browser is set to use the proxy server, the access to the device via local network shall be granted
only after adding the IP-address into the exceptions list as indicated in the browser documentation.
2) Select "Parameters" for setup of parameters. Password request shall appear before granting access to setup
mode (factory setting 11111).
3) Enter password and press ENTER. If the password is correct, you shall be granted access to the setup
mode. You will see the settings page. If the password is incorrect, the password request shall be displayed once
again.
4) Settings on the settings page are grouped by types and are divided into tabs. Non-configurable settings and
measurements are available in the tab "State". Settings on other tabs are listed in Table 5.8.
5) Click SAVE after making changes to the settings. This will check all the changed parameters. If no errors are
detected, new parameters will be stored in the EM-481 memory (new settings will take effect after the following
application of settings or restart of the device). In case of any errors detected upon clicking the SAVE button, none
of the parameters is saved, while the names of erroneous parameters are highlighted in red.
6) To apply the settings without restarting the device, you should click "Apply" at the bottom of the page. The
entered settings will be checked. If the values of the parameters have not errors, the parameters will be stored in
the memory of EM-481 and will come into force. Only parameters MODBUS and User's can be applied without
restarting.
7) To set the clock on the tab "Time", press "Set" button.
8) Click "Restore defaults" to restore the default value of parameters.
9) Click "Reset" to stop all connections and interrupt all receive/transmit operations, with the following restart
of the device. In case of any changes to the parameters, either introduced or stored in the memory, these changes
shall be implemented.
If the addressing parameters in Ethernet network (MAC-address, IP- address) are modified and saved,
the browser may not load the page after the restart of EM-481 by pressing the "Reset" button. This can
happen as the browser continues to reply over the previous address. In this case, the connection should be
made anew.
10) Clicking the "Exit" button the will close the setup mode and a password request appears once again.
5.3.4. EM-481 configuring via MODBUS-interface
Setting via Modbus-interface shall be provided if the device is connected using the Modbus client, which is
supporting the Modbus TCP protocol. The connection is established using its IP-address (for display of the address
on the device display see the it. 5.3.1) with the indication of Modbus-identifier (factory setting – 111).
Write the password string into the password input register (see Table 5.6) before setting parameters. Factory set
password - is 11111, i.e. write 49 - ASCII-code for one to record the factory set password to registers 100 - 104. If
the password is correct, the mode register (see Table 5.7) takes the value of "1" - setup mode.
The instruction registers (see Table 5.7), as well as registers for the collection of Modbus customizable
parameters (see Table 5.8) are available for writing in the setup mode. When the required value is written to the
registers of customizable parameters, write 2 (instruction for "Saving") in the instruction register. The accuracy of
values for the stored parameters can be checked by comparing the collections of customizable parameters and
saved parameters. If collections are the same, new values and settings shall be accepted and saved.
To apply the settings without restarting the device you should write into the parameter of the control command the
value "4" - command "Save and apply". Only parameters MODBUS network and user's can be applied without the
device restarting. The correctness of the saved parameter values can be checked by comparing the sets of configurable
parameters and current settings. If the sets match, then the new settings are accepted and saved.
To cancel the changes in the parameters before saving them, you should write the value of "9" command in the
control command parameter - the "Cancel" command. In this case, the configurable parameters take the values of the
saved ones.
To reset the saved parameters to the factory settings in the configuration mode, you should write the value of
"444" command in the control command parameter - "Reset to factory".
In order for all saved parameter values to take effect, the device must be restarted. Through the MODBUS interface,
the restart is performed by writing to the parameter of the control command the value "1" - the command "Restart".
To exit the setup mode, write 0 instead of any character in password input register. This will clear all the
password input registers and instruction register (turn the values to 0).
6. MAINTENANCE
6.1. Safety precautions
THE TERMINALS AND THE DEVICE INTERNAL ELEMENTS CONTAINS POTENTIALLY LETHAL
VOLTAGE
DURING MAINTENANCE IT IS NECESSARY TO DISABLE THE DEVICE AND CONNECTED
DEVICES FROM THE MAINS.
NOVATEK-ELECTRO
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EM-481
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