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The configuration on the SSI logger consists of several text files which can be edited on a PC. These need to be extracted from the logger, edited and then reinstated. It is possible to “brick” the logger if these files are edited incorrectly.


Required equipment:

  • Blank USB stick
  • PC (to edit configuration)

Saving Configuration to USB

Remove the USB to serial converter and insert the USB stick into the logger.

Navigate to the configuration menu:


Enter 12345 as the pass code:


Select “Save Configuration To USB”:


The logger will write the configuration to the USB stick:


When it’s finished, click “OK”


Updating the configuration

The USB stick will contain a folder named config_XXXX where XXXX contains the logger’s serial number:


It will contain several files, as per the example below:


Before editing the configuration, take a backup copy!

The “init.txt” file contains the logger’s start-up instructions, which will include a line as below:

ssi uart1=/dev/ttyUSB0 uart2=/dev/ttyUSB1 cfg=scripts/STPANCB.xml


This tells the logger that the file STPANCB.xml contains the SSI configuration for this logger.

Load the relevant ssi configuration file (i.e. STPANCB.xml in this case) into a text editor (notepad will not suffice, use wordpad or (recommended) notepad++).

You need to change the expected identifier to agree with the correct SSI Interlocking value.

This is at the end of the file, as in this example:


The value should be a positive integer from 1 to 63.

You may find configurations which contain “-1” which has been used as a placeholder.

Save the file back to the USB stick.


Loading Configuration from USB

First insert the USB stick into the logger.

Navigate to the configuration menu:


Enter 12345 as the pass code:


Select "Load Configuration From USB":


Confirm loading of the new configuration:


The logger MUST be restarted in order that the new configuration is used.


Wait for the logger to restart.