Siemens SINUMERIK 840D sl Commissioning Manual page 995

Additional Options
1. Use this button to start the VNC viewer.
2. Use the "Option" button to set parameters for the search.
PCU-Basesoftware (IM8)
Commissioning Manual, 02/2012, 6FC5397-1DP40-3BA0
Note
Operation via a VNC viewer:
A system can only be monitored from another station via an external VNC viewer
(default).
To view the system from another station, this function must be enabled by the system.
You can find the settings for this in the "System Network Center" or directly in tcu.ini in
the [VNCViewer] section.
Should you wish to access a PCU via the company network using the VNC scanner or
VNC viewer, port 5900 must be added to the PCU under "Control Panel" → "Windows
Firewall" → "Exceptions".
Reference: Operator Components and Networking Manual
Figure 5-5 VNC scanner: Set search parameters
5.5 How to search for stations within the system network
Service and diagnostics
101