5 Using Web HMI
5.1 Connecting to Web HMI
Connection to WHMI can be established using different communication card
ports or the LHMI service port. WHMI is disabled by default and can be enabled
with a setting parameter. As only secure communication is supported for the
WHMI, it must be accessed from a Web browser using the HTTPS protocol. Three
simultaneous LHMI and WHMI sessions are supported.
1. To enable the WHMI, select Configuration> HMI> Web HMI mode and set the
parameter to "On".
2. Reboot the relay for the change to take effect.
3. Log in with the proper user rights to use the WHMI.
If the WHMI is accessed through the LHMI service port, use the corresponding
IP address of the relay communication port. The IP address can be obtained via
the Engineer pages. Tap the relay's name on the LHMI menu bar to open the
Relay address dialog box.
To establish a remote WHMI connection to the protection relay,
contact the network administrator to check the company rules for
IP and remote connections.
HTTPS is enabled for all ports by default. To disable the HTTPS
for station ports, select Communication> Protocols> Network1>
HTTPS or Communication> Protocols> Network2> HTTPS and set
the parameter to "Off". HTTPS is always enabled for the X0/HMI port.
The WHMI write access can be limited with the parameter
HTTPS
write access
in Configuration> Authorization> Network1 or
Configuration> Authorization> Network2.
Disable the Web browser proxy settings or make an exception to
the proxy rules to allow the protection relay's WHMI connection, for
example, by including the relay's IP address in Internet Options>
Connections> LAN Settings> Advanced> Exceptions.
5.1.1 Logging in
1. Open a Web browser.
2. Type the protection relay's IP address in the address bar and press ENTER.
1MRS759118 D
Using Web HMI
REX640
Operation Manual
59
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