Boot Menu Does Not Appear - Siemens A53457 Installation & Maintenance

In this case, download new Executive to the WAG using the boot menu option. If the problem
persists, the fault may be a hardware error - either a RAM error or a faulty FLASH ROM.
If the user downloads new Executive software and the problem persists, send the WAG in for
repair.
4.6

BOOT MENU DOES NOT APPEAR

Typically, if the WAG boot menu will not appear on the terminal emulator after power-up, an
unknown baud rate is configured for the serial interface. If the terminal emulator baud rate does
not match the WAG configured baud rate, turning on the WAG might result in non-ASCII
characters appearing on the terminal emulator.
The other likely candidate for the problem is a faulty serial cable. Always use a simple null-modem
serial cable with at least three conductors:
Transmit
•
• Receive
• Signal Ground
The Transmit and Receive signals should be crossed between the computer and the WAG.
If the user performs both of the above items and still cannot see the boot menu, perform a
default configuration request. Do the following:
1. Carefully open the WAG.
2. Locate the Echelon Service button marked S3 on the board.
3. Hold down the Echelon Service Button. Apply power to the unit and release the button. The
WAG is forced to select a default configuration, setting the baud rate of the serial interface to
9600 baud, and to Command Mode.
The WAG will also default to the following values:
No parity, Data bits to 8, Stop bits to 1, and Flow control is disabled.
If the boot menu on the serial interface still does not appear, try connecting a different computer.
If the problem persists, send the WAG in for repair.
Document No.: COM-00-05-16
Version: C.1
NOTE
4-5
TROUBLESHOOTING
June 2006, Revised June 2014