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How to use the VNC feature of the HM-070MW and HM-102BW HMI?

 

VNC in HMI-Tool Software

Only HMIs ending in “W” (e.g. HM-070MW, HM102BW, etc.) have this function

Note [2023.10]: The password cannot be changed via the HMI screen

Note: On a touchscreen device (smartphone, tablet, etc.), to move the screen, use the outer area of the HMI screen (dark gray area).

Connect from your LAN (Local network)

With any VNC client software on Windows, Linux, Android, IOS,..

In this case, you can use any port number

With any web browser

In this case, the VNC port must be set to 7530

  • http://_______________:7430/novnc/vnc_auto.html?host=_______________&port=7530&true_color=1
    • Where _______________ is your HMI local IP address
    • Example: http://192.168.1.123:7430/novnc/vnc_auto.html?host=192.168.1.123&port=7530&true_color=1

If the interface is not in English, you can change it by clicking here:

Connect from outside/Internet

With any VNC client software on Windows, Linux, Android, IOS,..

In this case, you can use any port number

NAT the IP port inside your Internet router (Internet box)

Parameters:

  • Protocole = TCP
  • External port = 321
    • The port you want to use from the outside/Internet. Maybe something other than 321
  • Destination IP = 192.168.111.89
    • Your HMI IP address
  • Destination port = 123
    • The port you want to use on your HMI. Maybe something other than 123

Example for an Internet router (from Internet service provider SFR)

  • Inside your Internet box/router:
  • You have to NAT one TCP port:

Connect from outside with VNC Client to your public IP address:
  • You can find your public IP address:
    • in your Internet router’s web interface
    • or use https://whatismyipaddress.com/ to obtain get your public IP address
    • Here, the IP address is 87.65.43.21 following by the port number 321

Note: It’s important to set a strong password

Connect from outside/Internet

With any web browser

In this case, the VNC port must be set to 7530

NAT 7530 and 7430 IP ports inside your Internet router (Internet box)

Parameters:

First port:

  • Protocole = TCP
  • External port = 7530
    • The port you want to use from the outside/Internet. Maybe something other than 7530
  • Destination IP = 192.168. 111.110
    • Your HMI IP address
  • Destination port = 7530
    • Must be 7530, must not be modified

Second port:

  • Protocole = TCP
  • External port = 7430
    • The port you want to use from the outside/Internet. Maybe something other than 7430
  • Destination IP = 192.168.111.110
    • Your HMI IP address
  • Destination port = 7430
    • Must be 7430, must not be modified

Example for an Internet router (from Internet service provider SFR)

Inside your Internet box/router:

NAT ports 7530 and 7430:

Connect from outside with VNC Client to your public IP address:
  • You can find your public IP address:
    • in your Internet router’s web interface
    • or use https://whatismyipaddress.com/ to obtain get your public IP address
    • Here, the IP address is 87.65.43.21 following by the port number 7530

Note: It’s important to set a strong password

  • http://_______________:7430/novnc/vnc_auto.html?host=_______________&port=7530&true_color=1
    • Where _______________ is your HMI local IP address
    • Example: http://87.65.43.21:7430/novnc/vnc_auto.html?host= 87.65.43.21&port=7530&true_color=1

If the interface is not in English, you can change it by clicking here:

 

Port Checker

If you have problems connecting from outside/Internet

Check for open ports and verify port forwarding setup on your router : https://canyouseeme.org/

IP configuration on HMI : Ethernet and WiFi settings

Make sure you have an Ethernet LAN or WAN IP address configured, with an IP Gateway and DNS

See chapter “IP configuration on HMI screen: Ethernet and WiFi settings“ :