3.4 Engineering Serial Port
The Engineering Serial Port is a miniature DIN socket which provides
three functions:
a. Connection point for the Engineering Key to unlock the engineers
functions.
b. Connection point for the External Engineering Interface which allows
eachcontrolcardtobeconguredbyanexternalPCrunningthe
engineeringinterfacecongurationsoftware.
c. Connection point for a serial printer which can be used to provide
ahardcopyofthecontrolcardcongurationdataandstatus.
The Engineering Serial Port and its Engineering Key are shown below:
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