Specifications

Diagnostics
Summit WM20 Technical Reference Guide, Software Version 4.258
Using the console port
Connect to the console port of the Summit WM20 Controller to perform diagnostics or a rescue
procedure. The Summit WM20 Controller does not directly expose a DB9 COM interface. Instead, serial
console access is provided through the USB Control port as a USB connection. The connector is reserved
for Serial-over-USB operation.
To connect to the console port:
1 Install the virtual serial driver by Silicon Laboratories on the laptop. You only need to install the
serial driver once. You do not need to repeat installing the software each time you connect to the
port.
http://www.silabs.com/tgwWebApp/public/web_content/products/Microcontrollers/USB/en/mcu_vcp.htm
2 With a normal USB (male A/B ) cable, connect the B end to the Summit WM20 Controller and the A
end to the laptop. The driver recognizes the connection and installs a serial device (Com #).
To determine the actual number assigned to the device, navigate to Control Panel > System >
Hardware > Device Manager > Ports (COM & LPT).
3 Using a terminal program of choice (for example, Hyperterm) establish a connection to the Summit
WM20 Controller using the corresponding COM device.
The connection settings are 9600 8N1 No-Flow.
Summit WM20 Rescue Procedure
The Summit WM20 Controller provides a separate rescue partition on which a minimal copy of the
kernel is installed. The partition is accessed as a special mode of the system’s bootloader. Rescue mode
boots into the rescue partition, loads the minimal kernel and corresponding filesystem. It also mounts
the primary system partitions as locally accessed mount-points. The user is then presented with a menu
as to how the system’s rescue is to proceed.
NOTE
System rescue is a destructive procedure. All data in the main partition will be erased and replace with rescue
image contents.