VNC Client 129
User Guide v 2.0 — March 2023 System Setup
10.2.6.1 VNC Client
The VNC client is the IMM that connects to, views, and/or controls a VNC server (Altanium
Controller). The client computer requires the installation of a VNC client viewer (for example,
Real VNC).
NOTE: A VNC client should be able to connect to any computer running VNC server software,
regardless of the manufacturer.
10.2.6.2 VNC Server
The VNC server is the Altanium Controller that is controlled by a VNC client. VNC server
software is already installed on your controller.
10.2.6.3 VNC Connection
Most VNC client software applications can be used to connect to the HMI machine (VNC
server). The instructions below are specifically for vncviewer.exe. However, these steps
should apply to most VNC client software applications.
NOTE: Problems on the VNC client, such as blank/black screens, irregular or slow screen
rendering, and other UI related problems, are a possible fault of the setting(s) on the
VNC client, not the server. When in question (or when no instructions are available),
always select an “auto configuration” option (if the VNC client software supports it).
The client will negotiate with the server to determine the set of compatible
capabilities.
For security purposes, VNC makes it necessary for a password to be used for server
installation. A new password can be created by an operator with the correct screen
permissions. Passwords can be an alphanumeric combination with a length between three
and eight characters.
If the “Requires acknowledgement of VNC session” option is enabled, a connection cannot
be made by a client until it is approved by the operator of the VNC server. When the client
attempts to connect to a VNC server, a dialog will show that asks the operator to Accept or
Reject the connection. If no action is taken on the server operator’s part, the request will
Log VNC session activity Use this checkbox to enable VNC logging. Logging information is
written to a text file and can be retrieved with the Log File Export Option.
NOTE: At intervals, the VNC log is deleted, so the file does not use too
much disk space. If the log file is found to be over 1 MB in size,
the file is deleted. This check is performed on every system start
up. If the log is deleted, an entry will be made to the alarm
system.
Export Use this button to export the most recent VNC log file (and other log
files) to an external drive. This feature operates the same as the log
export found on the Main tab of the System screen.
Table 10-4 VNC Server Option Descriptions (Continued)
Item Description
To Next Page
Loading...
