The VNC menu item

Application

VNC is software that allows you to access the control from remote devices, such as from an additional ITC operating station. VNC enables you to transmit screen contents, mouse movements, and keystrokes between devices.

Description of function

Icons and buttons

The VNC settings window provides the following buttons:

Button

Meaning

Add

Add new VNC viewer or client

Remove

Delete the selected client

Only possible with manually entered clients.

Edit

Edit the configuration of the selected client

Update

Refresh view

Required with connection attempts during which the dialog is open.

Set standard values

Reset the settings to their default values

Set preferred owner of the focus

Select the Preferred owner of the focus check box

The VNC participant settings area

In the VNC participant settings area, the control shows a list of all clients.

The control displays the following contents:

Column

Contents

Computer name

IP address or computer name

VNC

Connection of the client to the VNC viewer

VNC Focus

The client participates in the focus assignment

Type

  • Manual
  • Manually entered client

  • Denied
  • This client is not permitted to connect.

  • Enable TeleService and IPC
  • Client via a TeleService connection

  • DHCP
  • Other computer that retrieves an IP address from this computer.

The Firewall warning area

If the firewall blocks VNC, the control displays the Firewall warning area.

Firewall

The Global settings area

In the Global settings area, you can define the following settings:

Function

Meaning

Enable RemoteAccess and IPC

If the check box is selected, the connection is always permitted.

Password verification

Client must enter a password for verification

The control opens a window when you select the check box. In this window you define the password for this client.

The client must enter the password when establishing the connection.

The Enabling other VNC area

In the Enabling other VNC area, you can define the following settings:

Function

Meaning

Deny

Other VNC clients are not permitted.

Inquire

A dialog opens when another VNC client wants to connect. You must grant permission for this connection.

Permitted

Other VNC clients are permitted.

The VNC Focus Settings area

In the VNC Focus Settings area, you can define the following settings:

Function

Meaning

Enabling VNC focus

Enables focus assignment for this system

When the check box is inactive, the focus owner actively gives away the focus by using the focus symbol. The remaining clients can request the focus only after it was given away.

Reset the CapsLock key when changing the focus

When the check box is active and the focus owner has activated the CapsLock key, the CapsLock key is deactivated if the focus changes.

Only if the Enabling VNC focus check box is enabled

Enable Concurrency VNC Focus

When the check box is active, every client can request the focus at any time. The focus owner does not need to give away the focus before to enable that.

When a client requests the focus, a pop-up window opens for all clients. If no client objects to the request within the pre-set period of time, the focus changes after the defined time limit.

Only if the Enabling VNC focus check box is enabled

Timeout Concurrency VNC Focus

Period of time after requesting the focus during which the focus owner can object to the focus change (at most 60 seconds).

This period of time is set by moving a slider. When a client requests the focus, a pop-up window opens for all clients. If no client objects to the request within the pre-set period of time, the focus changes after the defined time limit.

Only if the Enabling VNC focus check box is enabled

 
Tip

Select the Enabling VNC focus check box only in connection with HEIDENHAIN devices provided especially for this purpose (e.g., ITC industrial computers).

Notes

  • The machine manufacturer defines the procedure for assigning the focus with multiple clients or operating units. Focus assignment depends on the setup and operating situation of the machine tool.
  • Refer to your machine manual.

  • The control displays a message if the firewall settings of the control do not permit the VNC protocol for all clients.

Definition

Abbreviation

Definition

VNC (virtual network computing)

VNC is software that allows you to control other devices over a network connection.