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UNO-3000G Series User Manual
Chapter 2
H
ardware
F
unctionality
2.3
Optional RS232 Interface (COM3~COM4)
UNO-3000G series product offers two optional RS232 serial communication inter-
faces: COM3 and COM4. Please refer to Appendix A.3 for their pin assignments. The
default mode of these two ports is RS232. In order to use these ports, please follow
below steps.
1.
Take out the DB9 RS232 cables from the accessory bag.
2.
Connect these cables to CN21 and CN22 on the main board.
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