“Off-line” Simulating Interlocking Output


The SSI Function Generator (SFG) consists of a SSI function generator adaptor and PC running control software.

The SFG provides a means to generate command telegrams in the same format as a SSI trackside data link.

Also allows the user to create and run a sequence of telegrams, with embedded delays, to simulate the output from an interlocking.


  • “Dummy” running of the interlocking
  • Exercising TFMs
  • Works / Maintenance testing
  • New configuration testing

SSI Function Generator - Type ST501

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Park Signalling Limited

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