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Start-Up Guide
Due to our policy of continuous product innovation, some specifications may change without notification.
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System shell
Any QNX-based MultiSITE VM3 has a “system shell,” providing low-level access to a few basic platform settings. Using a special power-up
mode and a serial connection via a USB-to-MicroUSB cable connected to the MultiSITE VM3’s Debug port, you can access this system shell.
Note that system shell is also available via SSH (providing that SSH is enabled in the MultiSITE VM3).
Note:
• Typical usage is for troubleshooting. However, in the case of IP address misconfiguration, you can use the serial system shell in order
to regain access to the unit.
• Depending on your preference, you may wish to use the serial shell to set a MultiSITE VM3’s IP address, as an alternative to recon-
figuring your PC’s IP address in Windows (to initially connect to a new MultiSITE VM3). If done as the first step, afterwards, you could
connect normally (Ethernet/IP) and perform all other Niagara software installation/platform configuration using MultiSITE Supervisor
and the Commissioning Wizard. This method saves you time from having to reconfigure your PC’s IP address settings in Windows: first
to connect to the MultiSITE VM3 as shipped from the factory, and then back again to its original settings.
About MultiSITE VM3 system shell mode
To put the MultiSITE VM3 into the debug system shell mode, plug-in the USB-to-MicroUSB cable. This makes the system shell available at
the MultiSITE VM3’s Debug port, at a pre-defined serial rate: 115200, 8, N, 1.
Using a terminal emulation program such as PuTTY, you can then login with platform credentials and access the system shell menu. After
changing platform IP address parameters, a reboot command from the menu is necessary, and you remove the USB cable. The MultiSITE
VM3 reboots using the changed IP address parameters.
Apart from physical access to the MultiSITE VM3, you need the following items:
• A working USB port on your PC.
• VCOM or similar PC software (such as PuTTY) enabling the USB port to emulate a serial port
• A cable to connect your PC’s USB port to the MultiSITE VM3’s Debug port.
REFERENCE INFORMATION