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What is the part # and pin-out of the cable that came with my MVI serial module?

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The part number for reordering the RJ45 to DB9 adapter cable provided with PLC serial modules is Cable 14.

Pinout for the DB9 side:

 

This is a straight thru adapter cable, pin 1-1, 2-2, 3-3, etc. Pin 9 on the DB9 side is not used.

For the RJ45 side, while facing the module, the pins are numbered from 1 at the top to 8 at the bottom.