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10.6.4
Remotely accessing the MCU for operation and maintenance
You can connect via remote access to MCU components that have an active VNC server.
● The remote access to the Siemens PC system from a PG/PC in the system network
(Page 262) is activated via the factory setting. You can optionally define a password for this:
If you want to access the PC system via the company network instead or in addition, you
must adapt the firewall settings (Page 208) and define a password.
Note
Access to the PC system in the company network requires a secure password
A password is required to access the PC system via remote access in the company network.
The password is not yet defined in the factory settings. If the PC is to be accessed in the
company network, you must specify a password.
● The factory settings only enable you to monitor a PC system via an external VNC Viewer.
To operate the system from another station, the system in question must grant permission.
You make the necessary settings in the tcu.ini in section [VNCViewer].
Defining the password
To define passwords for remote access to the PC system, call the prompt and enter the
"sc_vncpwd" command.
Command
sc_vncpwd
● Example for company network (X1):
sc_vncpwd set companynetwork mypasswd
● Command for system network (X2):
sc_vncpwd set systemnetwork mypasswd
The password may contain a maximum of 8 characters. Passwords are saved in encrypted
form in the following file:
C:\ProgramData\Siemens\MotionControl\user\System\etc\sinumerikvnc.ini
Options for the VNC Viewer
Note
Do not change the factory settings!
To ensure that the VNC Viewer works properly, the following options must not be changed.
MCU commissioning: NC, PLC, Drive
Commissioning Manual, 02/2020, A5E47437618B AB
Param‐
Value
eter
set
companynetwork|systemnetwork
[password]
reset
companynetwork|systemnetwork
Installing and setting up PCU Base for IPC
10.6 Remote access for diagnostics
Meaning
Sets the specified password and acti‐
vates the password prompt for remote
access
Deactivates the password prompt (re‐
mote access without password)
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