5.2. Connector Layout
In order to facilitate the discussion of CrossFire GX1, each I/O pin is assigned with a unique port
number. The ports are accessible through connectors numbered X4 to X25. The port numbering:
acts as an interface between hardware and software
allows easy mapping to the object dictionary’s index/subindex system
distinguishes the electrical independence (i.e. despite identical signal names)
identifies internal I/O so that it can be reflected in the object dictionary
X1 Power Supply Connector
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